{"id":4557,"date":"2021-04-29T10:10:14","date_gmt":"2021-04-29T10:10:14","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=4557"},"modified":"2024-09-28T11:56:32","modified_gmt":"2024-09-28T11:56:32","slug":"immobilized-on-magnetic-silicon-based-materials","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/id\/immobilized-on-magnetic-silicon-based-materials\/","title":{"rendered":"Parameter eksperimental naringinase yang diimobilisasi pada bahan berbasis silikon magnetik"},"content":{"rendered":"<h1 class=\"wp-block-heading\"><strong>1. Metode deteksi aktivitas enzim naringinase<\/strong><\/h1>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4583\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-45.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">1-1 Metode spektrofotometer<\/h3>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4582\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-44.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Metode spektrofotometri para nitrofenol menggunakan p-nitrofenol- \u03b1-rhamnoside (pNP- \u03b1-Rha) dan p-nitrofenol-\u03b2-D-glukopiranosida (pNP- \u03b2-Glu) sebagai substrat, untuk mendeteksi aktivitas enzim \u03b1-rhamnosidase dan \u03b2-glukosidase. Li Ping menggunakan metode spektrofotometer p-nitrofenol, dalam percobaan penambahan Aspergillus niger \u03b2-glukosidase ke dalam larutan p-nitrofenol -\u03b2-glukosida (pNPG) untuk hidrolisis enzimatik, dan nilai absorbansi diukur pada panjang gelombang ultraviolet 400 nm. Dan berdasarkan nilai absorbansi, mereka menghitung aktivitas enzim \u03b2-glukosidase. Metode ini memiliki spesifisitas substrat yang kuat, tetapi substrat standar mahal, dan aktivitas enzim naringinase untuk menghidrolisis glikosida dalam makanan tidak dapat ditentukan, sehingga metode ini tidak cocok untuk mendeteksi aktivitas enzim dalam persiapan naringinase skala besar industri.<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4581\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-43.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Prinsip metode spektrofotometer Davis adalah bahwa naringin dapat terjadi reaksi reaksi kromogenik dengan dietilen glikol 90% dalam kondisi sedikit basa, dan produksi kalkon naringin kuning dapat dideteksi di bawah sinar ultraviolet dengan panjang gelombang 420 nm. Menurut nilai absorbansi yang diukur, jumlah naringin substrat yang tersisa dapat dihitung, dan kemudian aktivitas naringinase dapat diperoleh dengan perhitungan. Wang Weina et al. menggunakan metode Davis yang ditingkatkan, mengambil naringin sebagai substrat, dan menambahkan naringinase yang dihasilkan oleh fermentasi cair Aspergillus niger FFCC 848 untuk hidrolisis enzimatik. Absorbansi diukur di bawah sinar ultraviolet 420 nm, dan kemudian menghitung aktivitas enzim. Metode spektrofotometer Davis untuk mengukur aktivitas enzim ini sederhana dalam pengoperasiannya, memiliki kecepatan yang cepat, sehingga metode ini banyak digunakan dalam deteksi waktu nyata produksi naringinase dengan fermentasi dan aktivitas naringinase yang diimobilisasi.<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4580\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-42.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">1-2 Kromatografi cair kinerja tinggi<\/h3>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4579\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-41.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Prinsip kromatografi cair kinerja tinggi (HPLC) adalah bahwa HPLC dapat secara akurat menentukan dan menganalisis secara kuantitatif substrat naringin, produk perantara purunin dan produk akhir naringenin selama seluruh proses hidrolisis, dan kemudian menghitung aktivitas enzim. Chen Yuelong dan yang lainnya menggunakan HPLC untuk menentukan waktu retensi naringin, arbutin, myricetin dan produknya, dan mencapai pemisahan lengkap dengan resolusi lebih besar dari 1,5, dan secara efektif memantau efek naringinase pada beberapa glikosida dalam proses hidrolisis, pada saat yang sama, aktivitas enzim ditentukan secara akurat. Metode HPLC memiliki keunggulan akurasi yang tinggi dan dapat menghindari gangguan pengotor, tetapi dibandingkan dengan metode Davis, metode ini memiliki waktu deteksi yang lebih lama dan pengoperasian yang lebih rumit.<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4578\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-40.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">1-3 Metode penentuan yang lebih baik untuk aktivitas enzim naringinase<\/h3>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4577\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-39.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Menggunakan metode Davis yang telah disempurnakan: 0,8 mL 0,8 g-L<sup>-1<\/sup>\u00a0Larutan naringin yang dibuat dengan buffer pH 4,5 ditambahkan ke dalam sistem reaksi yang mengandung 40 mg naringinase amobil (atau 0,2 mL naringinase bebas). Tempatkan dalam penangas air bersuhu konstan 50\u2103 selama 30 menit. Ambil 0,1 mL larutan hidrolisis enzimatik reaksi dan tambahkan 5 mL dietilen glikol (fraksi volume 90%) dan 0,1 mL larutan NaOH (4 mol-L<sup>-1<\/sup>) dalam tabung, dan diamkan selama 10 menit setelah mencampurnya secara merata. Ukur absorbansi larutan campuran pada 420 nm.<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4576\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-38.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Definisi aktivitas enzim naringinase (U): pada kondisi pH 4,5, 50\u2103, 1 unit aktivitas enzim adalah jumlah enzim yang dibutuhkan untuk mendegradasi 1 \u03bcg naringin per menit. Rasio aktivitas enzim (U-g<sup>-1<\/sup>\u00a0atau U-mL<sup>-1<\/sup>) didefinisikan sebagai: pada kondisi pH 4,5, 50 \u2103, aktivitas enzim yang ditunjukkan oleh 1 g naringinase terimobilisasi (atau 1 mL naringinase bebas). Aktivitas enzim relatif dihitung menurut rumus berikut ini:<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4575\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-37.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Aktivitas enzim relatif \/ % = aktivitas enzim \/ aktivitas enzim maksimum \u00d7 100<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4574\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-36.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Penentuan kurva standar: konsentrasi massa larutan standar glikosida naringin yang disusun 0, 0,4, 0,8, 1,2, 1,6 g - L<sup>-1<\/sup>kemudian diambil 0,1 mL larutan untuk direaksikan dengan 5 mL dietilen glikol (90%, v\/v) dan 0,1 mL larutan natrium hidroksida (4 mol-L<sup>-1<\/sup>). Setelah campuran tercampur rata dan didiamkan selama 10 menit, nilai serapan cahaya larutan campuran diukur pada 420 nm, dan kurva standar digambar sesuai dengan itu.<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4573\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-35.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><strong>2. Persiapan larutan enzim naringinase<\/strong><\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4572\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-34.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Aspergillus niger FFCC uv-11 yang disimpan pada suhu 4\u2103 dipindahkan ke media miring, dan spora matang diperoleh dengan kultur suhu konstan pada suhu 30\u2103 selama 96 jam. Kemudian, spora dicuci dengan garam normal steril dengan fraksi massa 0,9%. nilai absorbansi suspensi spora diukur pada 600 nm (nilai OD600), dengan garam steril nilai OD600 disesuaikan menjadi 0,200. Kemudian suspensi spora dengan fraksi volume inokulasi 10% dimasukkan ke dalam 100 mL media fermentasi (labu takar 250 mL), kaldu fermentasi yang diperoleh disentrifugasi pada suhu 4 \u00b0C dan kecepatan 6000 rpm.<sup>-1<\/sup>\u00a0selama 10 menit dalam sentrifus berpendingin. Kemudian melalui saringan hisap untuk mendapatkan cairan supernatan yang diperlukan cairan enzim naringin. Dinginkan pada suhu 4\u2103 untuk penggunaan selanjutnya.<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4571\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-33.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><strong>3. Pembuatan Enzim Naringinase Terimobilisasi Kitosan<\/strong><\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4570\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-32.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Ambil 3,0 g kitosan, dengan 100 mL fraksi volume larutan asam asetat 2% dilarutkan untuk menyiapkan 0,3 g - L<sup>-1<\/sup>\u00a0Larutan koloid kitosan, disonikasi selama 20 menit untuk menghilangkan gelembung udara dan membiarkannya larut sepenuhnya. Larutan koloid kitosan disuntikkan setetes demi setetes dengan jarum ke dalam 0,5 g - L<sup>-1<\/sup>\u00a0Kondensat NaOH (1000 mL) untuk membentuk pelet yang halus. Diamkan pada suhu kamar selama 3 jam, dan pelet berulang kali dicuci dengan air suling hingga netral, dan air diserap oleh kertas saring untuk mendapatkan mikrosfer kitosan. 0,4 g mikrosfer kitosan ditimbang, 0,4 ml glutaraldehida dengan fraksi volume 6% ditambahkan, dan mikrosfer berulang kali dicuci dengan air suling hingga tidak ada glutaraldehida di permukaan mikrosfer setelah suhu dan getaran konstan pada suhu 25 \u2103 150 r-min<sup>-1<\/sup>\u00a0selama 2 jam. Mikrosfer kitosan yang telah diikat silang diperoleh dengan mengeringkan dengan kertas saring.<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4569\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-31.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">\u00a0Dia mengatakan 0,4 g mikrosfer kitosan, tambahkan 0,4 mL nomor anggota kredit 6% glutaraldehida, pada 150 r - menit<sup>-1<\/sup>\u00a0Setelah 2 jam, dicuci berulang kali dengan air suling hingga permukaannya tidak mengandung pentil Dialdehida dan kertas saring dikeringkan untuk mendapatkan mikrosfer kitosan yang terikat silang. Ambil 4 mL larutan enzim naringinase, tambahkan ke 0,4 g mikrosfer kitosan ikatan silang, kocok pada suhu konstan 25 \u2103, 150 r-min<sup>-1<\/sup>\u00a0selama 2 jam, dan letakkan di lemari es pada suhu 4 \u2103 untuk adsorpsi Kopling selama 4 jam. Bilas larutan enzim sisa pada permukaan pembawa dengan buffer pH 4,5, serap air pada kertas saring untuk mendapatkan naringinase yang tidak dapat bergerak, dan simpan di lemari es pada suhu 4 \u2103 untuk digunakan nanti.<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4568\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-30.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><strong>4. Pembuatan mikrosfer kitosan berbasis silikon magnetik (MSC)<\/strong><\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4567\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-29.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Proses persiapan nanopartikel berbasis silikon magnetik (MS) ditunjukkan pada Gambar 1.<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"554\" height=\"175\" class=\"wp-image-4559\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-21.png\" alt=\"\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-21.png 554w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-21-300x95.png 300w\" sizes=\"(max-width: 554px) 100vw, 554px\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Gambar 1 Diagram skematik persiapan nanopartikel berbasis silikon magnetik<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4566\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-28.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">(1) Pertama, magnetik Fe<sub>3<\/sub>O<sub>4<\/sub>\u00a0nanopartikel yang dimodifikasi dengan asam sitrat dibuat dengan metode ko-presipitasi kimia, dan prosedur percobaan yang terdiri dari: 2,25 g FeCl<sub>3<\/sub>-6H<sub>2<\/sub>O dan 1,61 g FeSO<sub>4<\/sub>-7H<sub>2<\/sub>O ditambahkan ke dalam labu leher tiga yang diisi dengan 100 mL air deionisasi, suhu sistem dipanaskan hingga 85 \u2103 dalam kondisi gas nitrogen. Aduk di bawah 1000 r-min<sup>-1<\/sup>\u00a0dan dengan cepat menuangkan 10 mL air amonia pekat. Setelah larutan menjadi hitam, tambahkan 153 mg natrium sitrat. Setelah 30 menit reaksi, pisahkan hasil produksi dengan magnet, dan cuci fase padat dengan air deionisasi dan etanol beberapa kali. Fe<sub>3<\/sub>O<sub>4<\/sub>\u00a0nanopartikel yang diperoleh dikeringkan untuk digunakan nanti.<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4565\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-27.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">(2) Kemudian, nanopartikel berbasis silikon magnetik (MS) disiapkan dengan metode sol-gel, seperti yang ditunjukkan pada Gambar 1. Langkah-langkah percobaan meliputi: 0,1 g Fe<sub>3<\/sub>O<sub>4<\/sub>\u00a0nanopartikel didispersikan secara seragam ke dalam larutan campuran yang mengandung 40 mL etanol anhidrat, 10 mL air suling, dan 1,2 mL air amonia pekat. Di bawah kondisi pengadukan 300 r-min<sup>-1<\/sup>tetesan larutan yang mengandung Fe<sub>3<\/sub>O<sub>4<\/sub>\u00a0nanopartikel ditambahkan ke TEOS (0,4 mL) yang didispersikan dalam 30 mL etanol anhidrat, dan reaksi nanopartikel berbasis silikon dilakukan selama 12 jam di bawah suhu kamar. Produk dicuci dengan etanol anhidrat dan air suling beberapa kali untuk mendapatkan nanopartikel berbasis silika magnetik (MS), yang dikeringkan untuk digunakan kemudian.<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4564\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-26.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Mikrosfer MSC dibuat dengan metode ikatan silang emulsi, seperti yang ditunjukkan pada Gambar 2. Langkah-langkah percobaan yang dilakukan meliputi: 0,125 g nanopartikel silika magnetik (MS) didispersikan secara merata ke dalam 10 mL larutan kitosan dengan fraksi massa 2,5% yang dibuat dengan cara melarutkan kitosan ke dalam larutan asam asetat dengan fraksi volume 5,0%, lalu menambahkan larutan kitosan ke dalam emulsi yang mengandung 60 mL lilin parafin cair dan 1,8 mL twin 80 tetes demi tetes. Setelah diaduk selama 30 menit pada kondisi penangas air 40\u2103 dan 800 r-min<sup>-1<\/sup>Tambahkan 2,0 mL glutaraldehida dan bereaksi 1 jam. Kemudian pH sistem disesuaikan menjadi 9,0 dengan 1 mol-L<sup>-1<\/sup>\u00a0NaOH, dan reaksi dilanjutkan selama 1 jam. Produk dicuci dengan petroleum eter, etanol, dan air suling beberapa kali untuk mendapatkan mikrosfer MSC, yang dikeringkan dalam ruang hampa udara untuk digunakan kemudian.<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"554\" height=\"246\" class=\"wp-image-4560\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-22.png\" alt=\"\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-22.png 554w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-22-300x133.png 300w\" sizes=\"(max-width: 554px) 100vw, 554px\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Gambar 2 Diagram skematik persiapan mikrosfer kitosan berbasis silikon magnetik<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4584\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-46.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><strong>5. Pembuatan mikrosfer kitosan berbasis silikon magnetik berbasis epoksi (MSCE)<\/strong><\/h2>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4585\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-47.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">0,5 g mikrosfer MSC kering yang dibuat dengan metode 4 ditimbang dan ditambahkan ke dalam labu takar 50 mL. Kemudian 2,0 mL larutan NaOH, larutan epiklorohidrin, dan NaBH<sub>4<\/sub>\u00a0Larutan ditambahkan ke dalam labu dengan konsentrasi tertentu, masing-masing. Dan reaksi dilakukan dengan osilasi suhu konstan selama waktu tertentu. Mekanisme reaksi pembuatan MSCE ditunjukkan pada Gambar 3.<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"554\" height=\"179\" class=\"wp-image-4561\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-23.png\" alt=\"\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-23.png 554w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-23-300x97.png 300w\" sizes=\"(max-width: 554px) 100vw, 554px\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Gambar 3 Prinsip persiapan mikrosfer kitosan berbasis silikon magnetik berbasis epoksi<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4586\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-48.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Setelah aktivasi, mikrosfer yang telah diaktivasi dicuci berulang kali dengan air suling hingga tidak ada gugus OH dan epoksi bebas di permukaan untuk mendapatkan mikrosfer kitosan berbasis silikon magnetik berbasis epoksi (MSCE). Metode pendeteksiannya adalah sebagai berikut: ambil 3,0 mL supernatan pencucian dan tambahkan 1~2 tetes fenolftalein. Setelah dikocok, jika tidak berubah menjadi merah, itu berarti tidak ada OH- bebas dengan MSCE; ambil 3,0 mL supernatan pencuci dan tambahkan 3,0 mL 1,3 mol-L<sup>-1<\/sup>\u00a0natrium tiosulfat dan 1 ~ 2 tetes fenolftalein, jika larutan tidak berubah menjadi merah setelah dikocok, berarti tidak ada gugus epoksi bebas dengan MSCE. Persamaan reaksi deteksi gugus epoksi adalah sebagai berikut:<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"554\" height=\"83\" class=\"wp-image-4562\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-24.png\" alt=\"\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-24.png 554w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-24-300x45.png 300w\" sizes=\"(max-width: 554px) 100vw, 554px\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\"><strong>6 Persiapan enzim naringinase terimobilisasi MSCE<\/strong><\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-4587\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-49.png\" alt=\"\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">5,0 g MSCE yang disiapkan dengan metode 5 ditambahkan ke dalam 50 mL larutan enzim naringinase dengan pH tertentu, dan reaksi diinkubasi dalam penangas air bersuhu konstan, seperti yang ditunjukkan pada Gambar 4. Setelah reaksi, mikrosfer dicuci dengan larutan penyangga beberapa kali hingga tidak ada naringinase bebas yang ditemukan pada permukaan mikrosfer. Mikrosfer dikeringkan dengan corong Brinella untuk mendapatkan enzim naringinase terimobilisasi MSCE, yang didinginkan pada suhu 4 \u2103 untuk digunakan nanti.\u00a0<\/h4>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"554\" height=\"183\" class=\"wp-image-4563\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-25.png\" alt=\"\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-25.png 554w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-25-300x99.png 300w\" sizes=\"(max-width: 554px) 100vw, 554px\" \/><\/figure>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\">Gambar 4 Prinsip persiapan enzim naringinase terimobilisasi MSCE<\/h4>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><strong><b>Hubungi Kami Sekarang!<\/b><\/strong><\/h2>\r\n<h4><strong><b>Jika Anda membutuhkan Harga, silakan isi informasi kontak Anda di formulir di bawah ini, kami biasanya akan menghubungi Anda dalam waktu 24 jam. Anda juga bisa mengirim email kepada saya\u00a0<span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"mailto:info@longchangchemical.com\">info@longchangchemical.com<\/a><\/span>\u00a0selama jam kerja (8:30 pagi hingga 6:00 sore UTC+8 Senin-Sabtu) atau gunakan obrolan langsung situs web untuk mendapatkan balasan secepatnya.<\/b><\/strong><\/h4>\r\n<table style=\"border-collapse: collapse; width: 326.27pt;\" border=\"0\" width=\"435\" cellspacing=\"0\" cellpadding=\"0\">\r\n<tbody>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt; width: 164.25pt;\" width=\"219\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/compound-glucoamylase-cas-9032-08-0\/\"><span style=\"color: #00ccff;\">Senyawa Glukoamilase<\/span><\/a><\/td>\r\n<td class=\"et2\" style=\"width: 162.00pt;\" width=\"216\">9032-08-0<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/pullulanase-cas-9075-68-7\/\"><span style=\"color: #00ccff;\">Pullulanase<\/span><\/a><\/td>\r\n<td class=\"et2\">9075-68-7<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/xylanase-cas-37278-89-0\/\"><span style=\"color: #00ccff;\">Xilanase<\/span><\/a><\/td>\r\n<td class=\"et2\">37278-89-0<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/cellulase-cas-9012-54-8\/\"><span style=\"color: #00ccff;\">Selulase<\/span><\/a><\/td>\r\n<td class=\"et2\">9012-54-8<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/naringinase-cas-9068-31-9\/\"><span style=\"color: #00ccff;\">Naringinase<\/span><\/a><\/td>\r\n<td class=\"et2\">9068-31-9<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/beta-amylase-cas-9000-91-3\/\"><span style=\"color: #00ccff;\">\u03b2-Amilase<\/span><\/a><\/td>\r\n<td class=\"et2\">9000-91-3<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/glucose-oxidase-cas-9001-37-0\/\"><span style=\"color: #00ccff;\">Glukosa oksidase<\/span><\/a><\/td>\r\n<td class=\"et2\">9001-37-0<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\">alfa-Amilase<\/td>\r\n<td class=\"et2\">9000-90-2<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/longzyme-acid-pectinase-cas-9032-75-1\/\"><span style=\"color: #00ccff;\">Pektinase<\/span><\/a><\/td>\r\n<td class=\"et2\">9032-75-1<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\">Peroksidase<\/td>\r\n<td class=\"et2\">9003-99-0<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/lipase-cas-9001-62-1\/\"><span style=\"color: #00ccff;\">Lipase<\/span><\/a><\/td>\r\n<td class=\"et2\">9001-62-1<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/catalase-cas-9001-05-2\/\"><span style=\"color: #00ccff;\">Katalase<\/span><\/a><\/td>\r\n<td class=\"et4\">9001-05-2<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/tannase-cas-9025-71-2\/\"><span style=\"color: #00ccff;\">TANNASE<\/span><\/a><\/td>\r\n<td class=\"et2\">9025-71-2<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/elastase-cas-39445-21-1\/\"><span style=\"color: #00ccff;\">Elastase<\/span><\/a><\/td>\r\n<td class=\"et2\">39445-21-1<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/urease-cas-9002-13-5\/\"><span style=\"color: #00ccff;\">Urease<\/span><\/a><\/td>\r\n<td class=\"et2\">9002-13-5<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/dextranase-cas-9025-70-1\/\"><span style=\"color: #00ccff;\">DEXTRANASE<\/span><\/a><\/td>\r\n<td class=\"et2\">9025-70-1<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.5pt; text-align: left;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/l-lactic-dehydrogenase-cas-9001-60-9\/\"><span style=\"color: #00ccff;\">L-Laktat dehidrogenase<\/span><\/a><\/td>\r\n<td class=\"et2\">9001-60-9<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/dehydrogenase-malate-cas-9001-64-3\/\"><span style=\"color: #00ccff;\">Dehidrogenase malat<\/span><\/a><\/td>\r\n<td class=\"et2\">9001-64-3<\/td>\r\n<\/tr>\r\n<tr style=\"height: 13.50pt;\">\r\n<td class=\"et2\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/id\/product\/cholesterol-oxidase-cas-9028-76-6\/\"><span style=\"color: #00ccff;\">Kolesterol oksidase<\/span><\/a><\/td>\r\n<td class=\"et2\">9028-76-6<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>","protected":false},"excerpt":{"rendered":"<p>1. Metode deteksi aktivitas enzim naringinase 1-1 Metode spektrofotometer Metode spektrofotometri para nitrofenol menggunakan p-nitrofenol- \u03b1-rhamnoside (pNP- \u03b1-Rha) dan p-nitrofenol-\u03b2-D-glukopiranosida (pNP- \u03b2-Glu) sebagai substrat, untuk mendeteksi aktivitas enzim \u03b1-rhamnosidase dan \u03b2-glukosidase. Li Ping menggunakan metode spektrofotometer p-nitrofenol, dalam percobaan menambahkan Aspergillus niger \u03b2-glukosidase ke dalam larutan p-nitrofenol -\u03b2-glukosida (pNPG) untuk hidrolisis enzimatik, dan nilai absorbansi diukur pada [...]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[108],"tags":[],"class_list":["post-4557","post","type-post","status-publish","format-standard","hentry","category-enzyme-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Experimental parameters of\u00a0naringinase immobilized on magnetic silicon based materials - Longchang Chemical<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangchemical.com\/id\/immobilized-on-magnetic-silicon-based-materials\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Experimental parameters of\u00a0naringinase immobilized on magnetic silicon based materials - Longchang Chemical\" \/>\n<meta property=\"og:description\" content=\"1.\u00a0Detection method of naringinase enzyme activity 1-1\u00a0Spectrophotometer method The para nitrophenol spectrophotometric method\u00a0uses p-nitrophenol-\u00a0\u03b1-rhamnoside (\u00a0pNP-\u00a0\u03b1-\u00a0Rha\u00a0) and p-nitrophenol-\u03b2-D-glucopyranoside (\u00a0pNP-\u00a0\u03b2-Glu) as substrate, for detecting the enzyme activity of\u00a0the \u03b1-rhamnosidase\u00a0and \u03b2-glucosidase.\u00a0Li Ping\u00a0used the p-nitrophenol spectrophotometer method, in the experiment of\u00a0adding\u00a0Aspergillus niger \u03b2-glucosidase into the solution of\u00a0p-nitrophenol\u00a0-\u03b2-glucoside (\u00a0pNPG\u00a0) for enzymatic hydrolysis, and the value of absorbance was measured at [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/longchangchemical.com\/id\/immobilized-on-magnetic-silicon-based-materials\/\" \/>\n<meta property=\"og:site_name\" content=\"Longchang Chemical\" \/>\n<meta property=\"article:published_time\" content=\"2021-04-29T10:10:14+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-09-28T11:56:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-45.png\" \/>\n<meta name=\"author\" content=\"Longchang Chemical\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/longchangchemical.com\/immobilized-on-magnetic-silicon-based-materials\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/longchangchemical.com\/immobilized-on-magnetic-silicon-based-materials\/\"},\"author\":{\"name\":\"Longchang Chemical\",\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/person\/ecb1ad846136c6f1ca534b62978c6a8e\"},\"headline\":\"Experimental parameters of\u00a0naringinase immobilized on magnetic silicon based materials\",\"datePublished\":\"2021-04-29T10:10:14+00:00\",\"dateModified\":\"2024-09-28T11:56:32+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/longchangchemical.com\/immobilized-on-magnetic-silicon-based-materials\/\"},\"wordCount\":1840,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/longchangchemical.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/longchangchemical.com\/immobilized-on-magnetic-silicon-based-materials\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/04\/image-45.png\",\"articleSection\":[\"Enzyme News\"],\"inLanguage\":\"id\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/longchangchemical.com\/immobilized-on-magnetic-silicon-based-materials\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/longchangchemical.com\/immobilized-on-magnetic-silicon-based-materials\/\",\"url\":\"https:\/\/longchangchemical.com\/immobilized-on-magnetic-silicon-based-materials\/\",\"name\":\"Experimental parameters of\u00a0naringinase immobilized on magnetic silicon based materials - 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