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All Journal Jurnal Ilmu Dasar BERKALA SAINSTEK UNEJ e-Proceeding Jurnal Kimia Riset Jurnal Biodjati Indonesian Chimica Letters InSTEM Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS) Journal of Bio-molecule Research And Engineering
Wuryanti Handayani
Jurusan Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Jember
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Control & Systems Engineering Earth & Planetary Sciences Education Immunology & microbiology Mathematics Physics Other

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Effect of pH and Incubation Time on Dissolved Nitrogen During Autolityc Degradation of Chicken Intestine Aulia, Eldiani; Sjaifullah, Achmad; Handayani, Wuryanti; Busroni; Oktavianawati , Ika; Reza, Muhammad
Indonesian Chimica Letters Vol. 2 No. 1 (2023)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/icl.v2i1.372

Abstract

Chicken intestine is a part of internal organs, which are rich in protein and protease enzymes. The protease enzyme could self-degrade (autolytic degradation process) proteins in the chicken intestine at an appropriate pH and incubation time. This process produces a shorter chain polypeptide having a higher solubility protein called protein hydrolysates. Protein hydrolysates have shown a good impact in foods and health applications. In this study, the autolytic degradation of chicken intestine was carried out to obtain protein hydrolysates. The effect of pH and incubation time on the dissolved nitrogen (%N) and protein content ([protein]) in hydrolysate from the autolytic degradation of chicken intestine explained in this paper. The incubation pH used in this study was 2.5, 3.5, 5.5., and 6.3 while the the incubation time was 0, 6, 12, and 18 h. Chicken intestine was incubated for 18 h at several different pHs, and the % N and protein content were determined by using Formol titration and Bradford methods, respectively, within       6 h intervals. It was obtained the % N and [protein] content increase at pH 2.5 and 3.5 during 18 h of incubation time and they were decreased at a higher pH. The optimum % N and [protein] content were 5.98±0.51 % and 25.3±0.04 mg mL-1, respectively, obtained at pH of 2.5 during 18 h incubation time.
Development of Dihydrofolate Reductase Inhibitor Based on QSAR and Molecular Docking Sudarko, Sudarko; Kristiyono, Rimba Candra; Ratnadewi, Anak Agung Istri; Handayani, Wuryanti
Indonesian Chimica Letters Vol. 3 No. 1 (2024)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/icl.v3i1.940

Abstract

QSAR modeling allows for predicting activity through quantitative relationships between molecular structure and activity. This research uses DEEPScreen, which is a development of QSAR for searching new drugs. This research leverages DEEPScreen-QSAR modeling to optimize the predictive power of machine learning algorithms on a dataset of 645 molecules from previous research. The optimized model achieves an accuracy of 0.7461 and precision of 0.8169, demonstrating its effectiveness in the virtual screening stage. The optimized DEEPscreen-QSAR model is used to screen approximately 1.9 million small molecules in the ChEMBL database, resulting in binary classification predictions of active (1) molecules as 781,213 and inactive (0) molecules as 1,133,325 (molecules with IC50 activity ≤10,000 nM are considered active). The active (1) molecules obtained are screened again to find molecules that can be absorbed by the body (orally) using Lipinski’s RO5 with 0 deviations, resulting in 557,428 active molecules that can be absorbed by the body. These screening results are validated using molecular docking methods by linking protein and ligand to determine Gibbs free energy (∆G) and interactions using PyRx, PyMOL, and Biovia Discovery Studio programs. Based on the results of this research, candidate DHFR inhibitors with codes CHEMBL3302655, CHEMBL1384989, and CHEMBL1729486 are recommended.
Essential Oil Composition of Rose Flowers from Karangpring Village Jember District Extracted by Distillation and Enfleurage Oktavianawati, Ika; Letisya, Nanda; Citra, Priscillia; Utari, Dwi Purwita; Winata, I Nyoman Adi; Handayani, Wuryanti; Nugraha, Ari Satya
Jurnal ILMU DASAR Vol 20 No 2 (2019)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (346.523 KB) | DOI: 10.19184/jid.v20i2.8995

Abstract

Karangpring is one tourist destination villages in Jember district which is popular with beautiful large rose field areas. Therefore, this area grows to be a leading producer of rose flowers in Jember district. However, the bulky presence of these flowers made its price becomes lower in regular days. Local community only uses and sells these fresh flowers as the flower for funeral. The rose flower has a great potency to be explored as a source of rose essential oil production. To date, there is no previous research on studying rose flowers from Karangpring village for its potency on the essential oil production. In this research, rose flowers were subjected to be extracted of its essential oil using two extraction methods, distillation, and enfleurage. Hydrodistillation resulted two phases of distillates, above part formed a cloudy white phase as a normal essential oil extracted from plants, and the lower phase was an aqueous phase containing rose hydrosols. Both phases of these condensates were analyzed using GCMS. Data explained that above phase, with a yield oil of 0.07%, only contains long-chain hydrocarbons such as n-nonadecane, n-heptadecane, 9-nonadecene, and eicosane, while the lower phase only contains 2-phenylethyl alcohol. On the other hand, enfleurage of fresh rose flowers resulted in 0.06% oil yield. GCMS analysis of this oil shows that 2-phenylethyl alcohol, eugenol, and phenylacetic acid are three major compounds which take more than 85% of total rose absolute. The results show that enfleurage is a better method for extracting rose oil in better quality than using the distillation method, in term of the variety of volatile components. Meanwhile, hydrodistillation is still benefiting from producing rose water that is qualified as an industrial additive agent for food and cosmetic productions or even a new potent of agromedicine products. Keywords: rose, rose oil, rose water, rose absolute, distillation, enfleurage.
Ekstraksi Xilan dari Limbah Ampas Singkong dan Pemanfaatannya sebagai Substrat Endo-B-1,4-D-Xilanase Firdausa, Fita Kurnia; Santoso, Agung Budi; Handayani, Wuryanti
BERKALA SAINSTEK Vol 5 No 1 (2017)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v5i1.5376

Abstract

Ampas singkong merupakan limbah hasil pembuatan tepung tapioka. Hemiselulosa merupakan komponen kimia pada ampas singkong, komponen utama hemiselulosa adalah xilan. Penelitian ini bertujuan mendapatkan xilan dari ampas singkong serta pemanfaatan xilan sebagai substrat endo-B-1,4-D-xilanase. Ampas singkong yang akan diekstraksi diukur terlebih dahulu kadar HCN, lignin, dan air. Ekstraksi xilan dari ampas singketode DNS. Hasil penelitian menunjukkan bahwa ampas singkong yang digunakan pada penelitian ini memiliki kandungan HCN sebesar 16,10 ppm, kadar lignin sebesar 4,34% dan kadar air sebesar 7,45%. Ekstraksi xilan dengan NaOH 12% menghasilkan rendemen tertinggi yaitu 32,14% (delignifikasi) dan 52,36% (tanpa delignifikasi).Kata Kunci: Ampas singkong, xilan, delignifikasi.
Screening Fitokimia dan Studi Aktivitas Ekstrak Daun Sintok (Cinnamomum sintoc Bl.) Sebagai Antioksidan dan Antihiperlipidemia Kumalasari, Ardine; Handayani, Wuryanti; Siswoyo, Tri Agus
BERKALA SAINSTEK Vol 7 No 1 (2019)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v7i1.9683

Abstract

Cinnamomum sintoc Bl. merupakan tanaman yang memiliki kandungan minyak atsiri di kulit batangnya yang digunakan untuk antioksidan, antihiperlipidemia dan lain-lain. Dari penelitian ini, senyawa metabolit sekunder dari daun sintok (kadar air 54,7%±0,69) diekstrak dengan metanol dan dianalisis dengan reagen spesifik. Daun sintok diekstraksi secara maserasi bertingkat dengan meningkatkan kepolaran pelarut, yaitu n-heksana, etil asetat, metanol. Uji antioksidan dan antihiperlipidemia dilakukan pada setiap ekstrak(HS, ES, MS) menggunakan standar asam galat equivalent. Total fenolik dan total flavonoid dihitung menggunakan kurva standar asam galat dan kuersetin, hasil total fenolik dari setiap ekstrak antara lain HS (39,23±2,79 mg AGE/g); ES (110,77±2,37 mg AGE/g); dan MS (283,63±3,96 mg AGE/g). Aktivitas antioksidan pada ekstrak ditentukan dengan kemampuan ekstrak untuk meredam DPPH sedangkan aktivitas antihiperlipidemia ekstrak ditentukan dengan kemampuan ekstrak untuk menghambat kinerja lipase. Potensi ekstrak daun sintok terhadap antioksidan cukup tinggi hanya untuk ekstrak MS, sedangkan potensi terhadap antihiperlipidemia untuk semua jenis ekstrak.
Isolation and Characterization of Uricase Produced from Chicken Liver Wuryanti Handayani; Nasrul Amaliyatun Naja; Muhamad Kiki Afindia Joenata; Ratnadewi, Anak Agung Istri
Journal of Bio-Molecule Research and Engineering Vol 1 No 1 (2022)
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jbiome.v1i1.35859

Abstract

Uricase is an enzyme that degrades uric acid into allantoin. One of the uricase sources is obtained from chicken species (Gallus gallus domesticus) liver which are broiler and native chicken. This study aims to determine the maximum uricase activity in broiler and native chicken liver. The uricase activity was obtained by measuring the uric acid concentration as uricase substrate using spectrophotometric method and wavelength at 291 nm. Uricase isolation was carried out into extraction process, ammonium sulfate fractionation (0-60% saturation of ammonium sulfate), and dialysis. During isolation process, centrifugation speed was also optimized to obtain the maximum uricase crude extract and uricase activity. The molecular weight of uricase was also determined by SDS PAGE. The result showed that the highest uricase activity remained using centrifugation speed of 15,000 rpm. The optimum uricase fraction for broiler chicken liver was obtained at 20-40% saturation of ammonium sulfate with uricase activity was 1.854 x 10-2 U/mg, and the uricase fraction for native chicken liver was obtained at 40-60% saturation of ammonium sulfate with uricase activity was 2.496 x 10-2 U/mg. The optimum fraction for uricase production and isolation is carried out to the dialysis process. The optimum uricase activity of broiler chicken liver crude extract was 4.921 x 10-4 U/mg, the uricase fraction was 3.989 x 10-3 U/mg, and the dialysate was 5.120 x 10-3 U/mg. While the native chicken liver crude extract was 2.980 x 10-4 U/mg, the uricase fraction was1.415 x 10-2 U/mg, and the dialysate was 1.753 x 10-2 U/mg. The molecular weight of the uricase was around 35 kDA according to the SDS PAGE result.
The Effect of Substrate Concentration and Incubation Time on The Activity of The Uricase Enzyme From Goat Liver Handayani, Wuryanti; Febriani, Nurul Afifah; Ratnadewi, Anak Agung Istri; Sudarko; Pertiwi, Andriana Kusuma
Indonesian Chimica Letters Vol. 3 No. 2 (2024)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/icl.v3i2.4255

Abstract

Uricase is an oxidoreductase enzyme that catalyzes the degradation of uric acid into allantoin, hydrogen peroxide, and carbon dioxide. Allantoin, the primary product of uric acid degradation, exhibits 5-10 times greater solubility in water compared to uric acid. This property underscores the importance of uricase in managing hyperuricemia, a condition characterized by elevated uric acid levels in the blood. Hyperuricemia is associated with diseases such as gout, kidney dysfunction, and hypertension. While humans and primates lack the uricase enzyme, it is naturally present in the liver of non-primate mammals, including goats. This study investigated the activity of uricase extracted from goat liver, focusing on the optimum concentration of uric acid as the substrate and incubation time necessary for achieving maximum enzymatic activity. Goat liver samples were processed using borate buffer (pH 8.5) ammonium sulfate fractionation and dialysis to isolate uricase. The enzymatic activity was evaluated at uric acid concentrations of 1.0, 1.5, 2.0, 2.5, and 3.0 mM and incubation times of 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, and 6.0 hours. The results revealed that the optimum substrate concentration for uricase was 2 mM, yielding total enzyme activity of 0.6704 U/mL and specific activity of 0.0443 U/mg. Additionally, the optimum incubation time was determined to be 5 hours, resulting in total enzyme activity of 0.8421 U/mL and specific activity of 0.0556 U/mg. These findings provide valuable insights into enhancing uricase activity and optimizing its application in therapeutic strategies for hyperuricemia management. Further research is recommended to explore the potential of uricase in clinical and pharmaceutical contexts.
The Effect of Concentrated Seawater Salinity on Soybean Protein Coagulation in Tofu Production Rohmawati, Manis; Muflihah, Yeni Maulidah; Handayani, Wuryanti; Asnawati; Mulyono, Tri
Indonesian Chimica Letters Vol. 4 No. 1 (2025)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/icl.v4i1.5885

Abstract

Seawater, which has a salinity of 35 ‰, contains essential ions such as chloride, sodium, sulfate, magnesium, and calcium. These ions play a crucial role in the coagulation of proteins. Salt-based coagulants are among the oldest and most commonly used in tofu production. Additionally, several metal cations exhibit similar coagulating effects on soybean proteins. Tofu can be produced by adding salt coagulants, like calcium sulfate (commonly known as tofu stone) and seawater extract. The seawater extract was obtained from seawater through evaporation in three distinct ponds, with varying evaporation times that can lead to differences in salinity and density. In this experiment, we used coagulants from these three ponds, labeled A, B, and C. Coagulant C, derived from the pond with the longest evaporation time, has the highest salinity of 310 ‰ and a density of 1.220 g/cm³. The mass of the tofu produced shows a consistent pattern among coagulants A, B, and C: an initial increase followed by a decrease, which is influenced by the salting-out and salting-in processes. When used at a volume of 15 mL, Coagulant C yielded the highest mass at 179.426 grams and the lowest water content at 71.152%, demonstrating its effectiveness in protein coagulation.
Lactic Acid Bacteria Isolated From Digestive Tract of Broilers Treated with Fish Protein Hydrolysate Utarti, Esti; Utami, Eva Tyas; Sjaifullah, Achmad; Handayani, Wuryanti; Belkis, Malika; Medayani, Rani Dian
Jurnal Biodjati Vol 10 No 2 (2025): November
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v10i2.38422

Abstract

The composition of the feed plays a role in stimulating the activity of the microbiota in the gastrointestinal tract; therefore, the addition of fish protein hydrolysate (FPH) is suspected to influence the activity of microbiota, especially probiotics. Therefore, the presence of probiotics in the gastrointestinal tract affects the weight and quality of the broiler. This research aims to investigate the effect of administering fish protein hydrolysate as a dietary supplement on the composition of lactic acid bacteria (LAB), a potential probiotic candidate. This research was conducted in several stages, including the diversification of feeding broilers, the isolation and purification of LAB from the caecum and small intestine, primary characteristics, pathogenicity tests, and biochemical identification of LAB. Feed diversification was conducted by supplementing diets with 1%, 1.5%, and 2% FPH in 20-day-old for 7 days.. LAB from the small intestine and caecum samples were isolated on MRSA media by adding CaCO3. The Gram test, catalase test, and endospore staining test were carried out to characterize the suspected LAB primarily. The pathogenicity test was conducted by inoculating LAB on blood agar medium. Furthermore, biochemical tests are carried out using the KB020 kit. The results showed that the highest population of LAB in the small intestine (1.57 × 108 CFU/mL) was observed with 2% FPH supplementation. In comparison, the caecum yielded the highest population (1.22 × 108 CFU/mL) under 1.5% FPH. Giving 2% FPH  to broiler chicken feed provides a weight gain of 1.021 kg/head. The primary characteristics of the eight bacterial colony isolates suspected of being LAB were Gram-positive, catalase-negative, and did not form endospores. Eight LAB isolates of probiotic candidates were non-pathogenic as indicated by the occurrence of α-hemolysis and γ-hemolysis. Biochemical identification of probiotic candidates yielded four types of Lactobacillus, namely L. mucosae, L. frumenti, L. sanfranciscensis, and L. ferintoshensis. These LAB strains show promising probiotic potential for use as a feed additive in the broiler production system.
Co-Authors A. A. Istri Ratnawati AA. Istri Ratnadewi Achmad Sjaifullah Agung Budi Santoso Anak Agung Istri Ratnadewi Andika Ade Kurniawan, Andika Ade Andriana Kusuma Pertiwi Asnawati Asnawati Asnawati Aulia, Eldiani Bambang Piluharto Belkis, Malika Busroni Citra, Priscillia Denny Trias Utomo, Denny Trias Dwi Indarti Esti Utarti Eva Tyas Utami Febriani, Nurul Afifah Firdausa, Fita Kurnia Henry Adi Syahputra Sidabutar I Nyoman Adi Winata Ika Oktavianawati Istri Ratnadewi, Anak Agung Kristiyono, Rimba Candra Kumalasari, Ardine Kumalasari, Ardine Letisya, Nanda Leyla Novita Brigiyanti Linda Faiqotul Himmah Medayani, Rani Dian Muhamad Kiki Afindia Joenata Muhammad Reza Nasrul Amaliyatun Naja NG. Krishnabudi Ni Nyoman Tri Puspaningsih Novita Andarini Nugraha, Ari Satya Nyoman Gede Krishnabudi Oktavianawati , Ika Riki Juni Krismiadi Rohmawati, Manis Siti Nur Avida Sudarko Sudarko Sudarko Tri Agus Siswoyo Tri Mulyono Tri Mulyono Utari, Dwi Purwita Yeni Maulidah Muflihah Yudi Aris Sulistiyo, Yudi Aris