Judul: Ekstraksi Protein Serisin dari Kokon Sutera Liar Attacus atlas dan Karakterisasinya sebagai Biomaterial
Abstrak: The high sericin production is mostly determined by extraction method (degumming and serisin protein isolation). Sericin protein was extracted from silk wastewater by protein isolation with 75% (v/v) ethanol. Silk wastewaters was produced from degumming of cocoon Attacus atlas with 33,3% NaOH 0,25 N. Sericin protein extraction from Attacus atlas not only use a combination of temperature and time, but need a strong solvent for extracting sericin, strong bases such as NaOH. This research has been get the best extraction method to produce the highest sericin protein by optimization of protein extraction with response surface methodology (RSM). Stationary point at 129oC and 70,36 minute can produce maximum percentage of protein yields (± 19%). The molecular weight distribution of sericin was investigated by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS PAGE). The results suggested that sericin represented wide ranging molecular weight distribution (8,24-73,30 kDa). The amino acid of sericin was investigated by high performance liquid chromatography (HPLC) analytical methods that result highest component of Attacus atlas sericin is glysine (24,64%). Amino acids of sericin contains polar groups (50,72%) and non polar groups (49,28%). Sericin has wide applications as a biomaterial in medical, pharmaceutical and cosmetic. One of them as a surfactant material with the ability to reduce water surface tension of 71,67 dyne/cm to 51,8 ± 1,3 dyne/cm on the sericin addition of 0,58 ± 0,01 mg/ml.
Keyword: 

Judul: Purification and Characterization Sericin Protein Cocoon of Eri (Samia cynthia ricini) silkworm
Abstrak: Protein serisin merupakan perekat antar serat (fibril). Protein serisin diekstraksi dari limbah air degumming serat sutra. Serisin Samia cynthia ricini didapatkan dengan melakukan degumming menggunakan NaOH 0,033N dengan kombinasi suhu dan waktu 113 oC selama 34 menit. Hasil crude protein serisin kemudian dipurifikasi dengan netralisasi menggunakan HCL serta presipitasi etanol. Hasil purifikasi dikarakterisasi berat molekulnya menggunakan sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) dan didapatkan hasil berat molekul serisin sebesar 7,08 kDa. Asam amino serisin S. ricini dikarakterisasi menggunakan high performance liquid chromatography (HPLC) dan dihasilkan asam amino tertinggi pada glisina (15,35%). Aktivitas dalam penghambatan DPPH diketahui sebesar 66,86% dengan kapasitas antioksidan 8,03 mg VCE mL-1. Sifat antibakteri dimiliki serisin S. ricini terhadap bakteri S. aureus dengan zona hambat 6,74 mm dan persentase penurunan kekeruhan 80.04%., Sericin is a protein that acts as an adhesive joining two fibroin filaments. Sericin protein was extracted from silk wastewater. Silk wastewater was produced from degumming of cocoon Samia cynthia ricini with NaOH 0,033N and a combination of temperature and time 113 oC for 34 minutes. Crude sericin protein was purified with neutralization of HCL and ethanol precipitation. The molecular weight of purified protein was investigated by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and the results of S. ricinisericin molecular weight is 7,08 kDa. The amino acid of S. ricini sericin was investigated by high performance liquid chromatography (HPLC) that result in highest component is glycine (15,35%). Sericin S. ricini has 66,86% antioxidant activity with 8,03 mg VCE mL-1 antioxidant capacity. Antibacterial attribute of sericin S. ricini inhibit toward S. aureus bacteria with 6,74 mm inhibition zone and 80,04% in turbidity decrease percentage.
Keyword: purification, Samia cynthia ricini, sericin, SDS-PAGE, HPLC

Judul: Rancang Bangun Arsitektur Penanganan Dini Mualaf pada Aplikasi Hijrah ID dengan Metode UML Development System
Abstrak: Berdasarkan data dari Mualaf Center Indonesia bahwa tren mualaf tiap tahun meningkat dengan persentase sekitar 31,2% selama 4 tahun terakhir. Tantangan dan hambatan dialami mualaf antara lain adanya ancaman atau intimidasi dari keluarga atau kerabat dekat sehingga menyebabkan kondisi psikologis mualaf menjadi terganggu dan menghambat proses belajar agama Islam. Hijrah ID adalah sebuah aplikasi berbasis Android yang memberikan layanan untuk penanganan dini bila hal-hal yang tidak diinginkan terjadi pada mualaf serta pembelajaran mengenai agama Islam. Metode pengembangan aplikasi HIJRAH ID menggunakan UML Development System. Hijrah ID memiliki lima fitur utama di dalamnya, yakni fitur Ta’shil, Konsultasi, Artikel, Jadwal Kajian, dan Panic Button. Hasil dari penelitian ini berupa rancangan prototipe Panic Button. Panic Button merupakan suatu layanan untuk membantu mualaf ketika sedang memerlukan bantuan yang harus ditindak secara cepat tanggap sehingga harapannya mengurangi tindakan yang tidak diinginkan. Panic Button menghubungkan mualaf dengan ustaz berdasarkan posisi saat menekan panic button dan memberikan perizinan oleh ustaz.
Keyword: Android, mualaf, panic button