Anja Meryandini
Department Of Biology, Faculty Of Mathematics And Natural Sciences, IPB University, IPB Darmaga Campus, Bogor 16680; Center For Biotechnology, International Research Institute, IPB University, IPB Darmaga Campus, Bogor 16680

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Optimization of Xylanase Production by Streptomyces costaricanus 45I-3 Using Various Substrates through Submerged Fermentation SIPRIYADI SIPRIYADI; ARIS TRI WAHYUDI; MAGGY THENAWIDJAYA SUHARTONO; ANJA MERYANDINI
Microbiology Indonesia Vol. 14 No. 1 (2020): March 2020
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1468.005 KB) | DOI: 10.5454/mi.14.1.5

Abstract

Xylanase is an important hydrolytic enzymes with many application in several industries, but to obtain enzyme derived products is not easy. Thus, the optimization of efficient xylanases production is a great interest for biotechnological application. This study aims to determine the type of substrate, medium composition, and optimum conditions of xylanase production by S. costaricanus 45I-3. Determination of substrate type was done by growing the tested bacteria on birchwood xylan, beechwood xylan, oat spelled xylan, corn cobs xylan, and tobacco xylan substrate, meanwhile the determination of medium composition and enzyme production were done by measuring xylanase activity at various substrate concentration and replacing the carbon, nitrogen, phosphate and surfactants source. The results showed that the highest enzymatic index (EI) produced from corn cob xylan substrate at 3.60 meanwhile the second highest was beechwood xylan substrate at 2.87 EI, however this substrate is purer, thus this substrate was selected and used as xylan sources for further optimization measurement. The best xylanase activity (2.29 U/mL) obtained on eighth day after inoculation on rotary incubator at 120 rpm in 28 ºC. Arabinose as the source of carbon generate the highest activity at 3.161 U/mL meanwhile the most preferred source of phosphate is Na2HPO4 (2.37 U/mL). Both source of nitrogen i.e. nitrogen ammonium sulphate (NH4)2SO4 and yeast extract were able to produce xylanase at 2.57 and 2.36 U/mL. The addition of surfactant in production medium showed addition of SDS surfactant (0.146 U/mL) and Tween 80 (0.438 U/mL) showed a negative response by decreasing the activity. The conclusion showed that the xylanase activity was increased after optimization at various C, N, and P sources, and the use of nitrogen source (NH4)2SO4), become a more economical alternative to replacing a nitrogen source yeast extract so it can lower the production costs of xylanase enzyme.
The ethanol Production Activity of Indigenous Thermotolerant Yeast Pichia kudriavzevii 1P4 DAROJATUL ULYA; RIKA INDRI ASTUTI; ANJA MERYANDINI
Microbiology Indonesia Vol. 14 No. 4 (2020): December 2020
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1227.645 KB) | DOI: 10.5454/mi.14.4.1

Abstract

Pichia kudriavzevii 1P4 is a thermotolerant-ethanologenic yeast potential for application in ethanol industry. In this study we evaluated the stress tolerance phenotype of P. kudriavzevii 1P4 in dealing with fermentation related-stresses, including high temperature stress, high sugar content, ethanol content and the fermentation capacity of the particular isolate. Based on spot assay, 1P4 showed stress tolerance phenotype against high sugar concentration for up to 30% sugar content and 10% ethanol stress. In addition, 1P4 was capable to show temperature-stress tolerance phenotype for up to 42oC, suggesting that 1P4 belong to thermotolerant yeast isolate. Fermentative activity was measured by using glucose consumption and ethanol production assay. We evaluated the fermentative and growth rate of 1P4 at various temperature condition which were 27oC, 37oC and 42oC using YPD media (at initial glucose of 2%, 10% and 20%). Interestingly, 1P4 consumed the highest glucose in 20% of concentration at 37oC (15.29%), simultaneously with the highest concentration of ethanol (32.05 g/L ethanol and 0.67 g/L/h ethanol productivity). Cell growth analysis showed that growth of 1P4 isolate increased with higher initial glucose condition yet decreased as temperature during fermentation was raised. The growth rate of 1P4 was found high in 20% initial glucose at 37oC than 2% and 10% at same temperature. In addition, 1P4 exhibited short lag phase at high-temperature fermentation. Our data indicate that 1P4 can potentially be applied as fermentation agent especially in high-temperature ethanol fermentation. Key words: bioethanol production, fermentation related-stress, thermotolerant yeast
Pretreated Sugarcane Bagasse Result in more Efficient Degradation by Streptomyces sp S2 Stanislaus Aditya Agung; Rismawati .; Dede Heri Yuli Yanto; Anja Meryandini; Titi Candra Sunarti
Microbiology Indonesia Vol. 16 No. 1 (2022): March
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.562 KB) | DOI: 10.5454/mi.16.1.13-22

Abstract

Streptomyces genera plays an important role in lignocellulose degradation. Many research found that Streptomyces have cellulolytic and ligninolytic enzymes that are sufficient to degrade lignocellulosic materials. However, a minimum lignocellulosic material condition that can efficiently be degraded by sp. has Streptomyces not been fully understood. In this research, three pretreatment conditions (physical, alkaline-hydrothermal, and hydrogen-peroxide chemical treatments) of sugarcane bagasse were used as lignocellulosic material to be further degraded by Streptomyces sp. S2. Lignocellulose component measurement concluded that raw (physically treated only) bagasse was not efficiently degraded by  Streptomyces sp S2. Hydrogen-peroxide was effective in reducing both syringic and guaiacyl lignin. Meanwhile, alkaline-hydrothermal pretreatment was very effective in lowering syringic lignin. This study suggests that hydrogen-peroxide pretreatment can be used in any type of lignocellulosic material, which can be further degraded by Streptomyces sp. S2. On the other hand, alkaline hydrothermal pretreatment is best suited to degrade lignocellulosic material with a high percentage of syringic lignin. Key words: Alkaline-hydrothermal treatment, Hydrogen peroxide treatment, lignocellulose, Streptomyces sp. S2, sugarcane bagasse
Effect of Cocoa Bean Fermentation Using Lactic Acid Bacteria and Yeast Starters on Flavonoid Formation and Antioxidant Activity Anja Meryandini; Irvan Anwar; Titi Candra Sunarti
Microbiology Indonesia Vol. 17 No. 1 (2023): March
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (365.174 KB) | DOI: 10.5454/mi.17.1.1-8

Abstract

This study investigates the effect of fermentation using lactic acid bacteria and yeast as starters on the formation of flavonoid compounds and the antioxidant activity of cacao beans. The fermentation process were divided into 4 groups: F1: spontaneous fermentation, F2: fermentation using Lactic Acid Bacteria (LAB), F3: fermentation using yeast and F4: fermentation using LAB and yeast. The extraction process was done using ethanol. Flavonoid content was analysis using spectrophotometer assay. The antioxidant activity was analyzed by 1,1-difenil-2-pikrilhidrazil (DPPH) method. All ethanol extract samples of fermented cacao beans contained alkaloids, polyphenols, flavonoids, and tannins. The flavonoid compounds from ethanol extract of cacao beans in F1 is 4.35 ± 0.20 mg/L, F2 (5.64 ± 0.05), F3 (5.37 ± 0.17), and F4 (5.99 ± 0.23 mg/L). The antioxidant activity of cacao bean fermentation extracts using starter were increase compared to the spontaneous fermentation extract (F1). The antioxidant activity in F2 increased to 46.45 ± 2.00%, F3 (49.05 ± 0.58%), and F4 (50.33 ± 0.43%), while the antioxidant activity of F1 was 42.31 ± 0.66%. IC50 value as the ability of the extract to reduce 50% DPPH radical on the ethanol extract of cacao beans from spontaneous fermentation (F1) was 141.67 mg/L. The IC50 value of the fermented cacao bean extract with the addition of starter was obtained at F2 at 109.30 mg/L, F3 (97.51), and F4 is 88.15 mg/L.
Bakteri Asam Laktat Kandidat Probiotik dari Susu Kuda Bima: Lactic Acid Bacteria from Bima Horse’s Milk as a Probiotic Candidates Dewi Asnita; Anja Meryandini
Jurnal Sumberdaya Hayati Vol. 9 No. 2 (2023)
Publisher : Departemen Biologi, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsdh.9.2.49-54

Abstract

Awareness of the role of healthy food has led to increased public interest in healthy food that has additional functions than as energy fulfillment. One form of the healthy foods is food that contains probiotics, so this study aims to select lactic acid bacteria from milk as probiotic candidates. Lactic acid bacteria isolates from goat, horse and buffalo milk in Indonesia were studied to find the best probiotic candidates out of 100 isolates. Parameters which are measured in this study included resistance to gastric acid, bile salts, aggregation, autoaggregation abilities, and sensitivity to antibiotics. One isolate from bima horse’s milk has the potency as a probiotic candidate. The bacterial isolate from Bima horse’s milk has the character of being resistant to acids, and bile salts, sensitive to the two antibiotics tested and can aggregate with Salmonella Thypimurium. From molecular identification, the selected Bima horse’s milk isolate has similarities with Lacticaseibacillus rhamnosus strain MG5511.
Characterization of Ethanolic Extract of Streptomyces sp. as a Pancreatic Lipase Inhibitors Produced by Endophytic Streptomyces sp. AEBg12 Lenni Fitri; Anja Meryandini; Dyah Iswantini; Yulin Lestari
Biosaintifika: Journal of Biology & Biology Education Vol 9, No 2 (2017): August 2017
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v9i2.8907

Abstract

Endophytic Streptomyces sp. AEBg12 isolated from Zingiber cassumunar (Bangle) is known to produce pancreatic lipase inhibitory compound. However, the characteristics of this active compound has not been reported yet. This study aimed to determine the characteristics of pancreatics inhibitory compound produced by Streptomyces sp. AEBg12 and to assess the role of endophytic actinobacteria in producing pancreatic lipase inhibitor using endophytic-free bangle tissue culture, wild bangle and compared with the activity of Streptomyces sp. AEBg12 endophytes. Supernatant of Streptomyces sp. AEBg12 was extracted using ethanol, ethyl acetate, and n-hexane solvents. Toxicity test was performed using larvae of shrimp Artemia salina. The results showed that the best solvent to obtain pancreatic lipase inhibitor compounds was ethanol. Phytochemical analysis showed that ethanolic extract of endophytic Streptomyces sp. AEBg12 contained flavonoids. IC50 value of ethanol extract was 180.83 µg/ml. The result of TLC showed that ethanolic extract of Streptomyces AEBg12 had a blue luminescence band indicated that there were either flavone, flavanones, flavonols or isoflavones. Inhibitory activity of Streptomyces sp. AEBg12 was higher than wild bangle and bangle tissue culture. The information from this study can be be used as a basic data for further characterization of the active compound, which might be developed as an antiobesity agent through its pancreatic lipase inhibitory activity.
Exploration of Potential Actinomycetes from CIFOR Forest Origin as Antimicrobial, Antifungus, and Producing Extracellular Xylanase Sipriyadi Sipriyadi; Yulin Lestari; Aris Tri Wahyudi; Anja Meryandini; Maggy Thenawidjaja Suhartono
Biosaintifika: Journal of Biology & Biology Education Vol 8, No 1 (2016): March 2016
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v8i1.5052

Abstract

This study aimed to isolate and explore the actinomycetes of CIFOR forest origin as an antimicrobial and antifungal agent, to produce an extracellular xylanase, and to identify isolates based on 16S rRNA gene sequences. Actinomycetes were isolated using Humic-acid Vitamin-B agar (HV) media. Actinomycetes colonies that grow on the medium HV was subsequently purified by growing them on yeast malt agar (YMA) media), then an antagonistic test of selected bacteria against Bacillus sp., Escherichia coli, Fusarium oxysporum, and Sclerotium sp was performed. Xylanase activity test was detected by observing a clear zone, followed by identification. Total of 35 isolates of actinomycetes isolated based on their colony morphology characteristics and diverse types of spore chains showed Streptomyces spp. of isolates CFR-06, CFR-15, CFR-17, CFR-18, and CFR-19 were able to inhibit the growth of Bacillus sp.. The highest inhibition zone has a diameter of 10.1 mm (isolate CFR-17). Isolates CFR-01 and CFR-15 were able to inhibit the growth of E. coli with the highest inhibition zone diameter of 5.1 mm (isolate CFR-15). Isolates CFR-29 and CFR-12 were able to inhibit the growth of F. oxysporum while isolate CFR-35 were able to inhibit the growth of Sclerotium sp.. Xylanase activity test showed that isolates CFR-12, CFR-20, CFR-22, CFR-24, CFR-25, CFR-30, CFR-33, CFR-34 have an ability to produce extracellular xylanase enzyme. Actinomycetes isolate (Xyl_22) as a potential xylanase enzyme producer was closely related with Streptomyces drozdowicii by the maximum similarity of 99%.How to CiteSipriyadi, S., Lestari, Y., Wahyudi, A., Meryandini, A., Suhartono, M. T. (2016). Exploration Potential CIFOR Forest actinomycetes origin as Antimicrobial, Anti Fungus and Producing Enzymes Extracellular Xylanase. Biosaintifika: Journal of Biology Biology Education, 8(1), 94-102.
Effect of Cocoa Bean Fermentation Using Lactic Acid Bacteria and Yeast Starters on Flavonoid Formation and Antioxidant Activity Anja Meryandini; Irvan Anwar; Titi Candra Sunarti
Microbiology Indonesia Vol. 17 No. 1 (2023): March
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5454/mi.17.1.7-14

Abstract

This study investigates the effect of fermentation using lactic acid bacteria and yeast as starters on the formation of flavonoid compounds and the antioxidant activity of cacao beans. The fermentation process were divided into 4 groups: F1: spontaneous fermentation, F2: fermentation using Lactic Acid Bacteria (LAB), F3: fermentation using yeast and F4: fermentation using LAB and yeast. The extraction process was done using ethanol. Flavonoid content was analysis using spectrophotometer assay. The antioxidant activity was analyzed by 1,1-difenil-2-pikrilhidrazil (DPPH) method. All ethanol extract samples of fermented cacao beans contained alkaloids, polyphenols, flavonoids, and tannins. The flavonoid compounds from ethanol extract of cacao beans in F1 is 4.35 ± 0.20 mg L-1, F2 (5.64 ± 0.05), F3 (5.37 ± 0.17), and F4 (5.99 ± 0.23 mg L-1). The antioxidant activity of cacao bean fermentation extracts using starter were increase compared to the spontaneous fermentation extract (F1). The antioxidant activity in F2 increased to 46.45 ± 2.00%, F3 (49.05 ± 0.58%), and F4 (50.33 ± 0.43%), while the antioxidant activity of F1 was 42.31 ± 0.66%. IC50 value as the ability of the extract to reduce 50% DPPH radical on the ethanol extract of cacao beans from spontaneous fermentation (F1) was 141.67 mg L-1. The IC50 value of the fermented cacao bean extract with the addition of starter was obtained at F2 at 109.30 mg L-1, F3 (97.51), and F4 is 88.15 mg L-1.
Diversity and the Composition of Fatty Acids of Lipolytic Bacteria Isolated from Soil and Aquatic Sediment in a Forest and on an Oil Palm Plantation Wijayanti, Marini; Meryandini, Anja; Wahyudi, Aris Tri; Yuhana, Munti
Makara Journal of Science Vol. 18, No. 3
Publisher : UI Scholars Hub

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Abstract

The specific bacteria in forests and on oil palm plantations are lipolytic bacteria. Their enzymes have been applied in the agro-aquaculture, food, detergent, pharmaceutical, dairy, and biodiesel-biokerosene industries. This study describes the diversity of cultivable lipolytic bacteria from soil and aquatic sediment in a forest and on an oil palm plantation and their fatty acid products. Soil samples used in this research were obtained from topsoil in a lowland forest and on an oil palm plantation and from sediments in fresh water near these sites. The forest is located in Bukit Duabelas National Park, and the oil palm plantation is near the forest in Sarolangun District, Jambi Province, Indonesia. Twenty-two isolates of lypolitic bacteria were selected from 32 isolates grown in lipolytic selective medium. The 22 consisted of 11 isolates from topsoil and 11 from aquatic sediment from the forest and plantation area. These isolates were identified by 16S rRNA-sequence data analysis. Taxonomically, they belonged to five genera: Burkholderia, Cupriavidus, Serratia, Acinetobacter, and Kurthia. The maximum likelihood tree showed that they are phylogenetically distributed in three clusters. They were clustered into three groups: the Burkholderia-Cupriavidus group, the Serratia-Acinetobacter group, and the Kurthia group. Their lipolytic enzymes formed various fatty acids after analysis by gas chromatography-flame ionization detector (GC-FID). Some isolates formed essential fatty acids, such as linoleic, linolenic, arachidonic, eicosapentanoic acid (EPA), and docosahexanoic acid (DHA).
The Use of Lactic Acid Bacteria and Cellulolytic Bacteria to Improve the Chemical Properties of Corn Flour Rosyidah, Elly; Meryandini, Anja; Sunarti, Titi Candra
Makara Journal of Science Vol. 17, No. 3
Publisher : UI Scholars Hub

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Abstract

Corn has the potential to be converted into flour, but its hard endosperm causies it to have a coarse particle size, and consequently, corn flour has high crude fiber, low protein, and high moisture. To overcome these problems, the milling of corn grain can be done by steeping it in water. The steeping process causes spontaneous growth of microbes, such as lactid acid bacteria and cellulolytic bacteria. The use of lactid acid bacteria and cellulolytic bacteria in the steeping process can soften the horny endosperm, which can enable corn grits to be ground into fine flours and which can improve the chemical properties of flour passed through an 80-mesh sieve. This study aimed to obtain isolates of indigenous lactid acid bacteria and cellulolytic bacteria from the corn steeping process, and to apply them as a starter in the steeping process of corn grits to improve the fine flour yield, and the chemical properties of flour passed through an 80-mesh sieve. Isolate E2213BAL was the lactid acid bacteria selected as the highest optical density at the logarithmic phase, while isolate B2121SLT was the cellulolytic bacteria with the highest enzyme activity (4.67 mU/ml). The results showed that the use of bacteria starter and fermentation time can decrease pH, increase total acid in the fermentation liquid, decrease the crude fiber, maintain protein, and decrease the moisture of corn flour passed through an 80-mesh sieve.
Co-Authors . Hamim . KURRATAA’YUN . YOPI . YOPI ., Yopi ., Yopi A, Gading Wilda A, Gading Wilda Abd. Rasyid Syamsuri Abdjad Asih Nawangsih Adawiah, Adilah ADE ANDRIANI Ade Andriani Ade Irma Ahmad Thontowi Aisyah, Nadira Alfred Michael Alina Akhdiya ALINA AKHDIYA AMOR TRESNA KARYAWATI Amor Tresna Karyawati, Amor Tresna Andika Susantri ANGGRAINI PUTRI UTAMI Anggreandari, Rizky Antonius Suwanto Anwar, Irvan Apon Zaenal Mustopa APRILIA NAOMI Ardana Kurniaji Ariandi Arina Amalia Putri Aris Tri Wahyudi Ariyanto, Yogy Satria Armita, Dea Asrianti Basri Atit Kanti Azizah Hikma Safitri Bambang Prasetya Bambang Prasetya Basri, Asrianti Basri, Asrianti Bedah Rupaedah Besty Maranatha CAHYA PRIHATNA Candra Sunarti , Titi Cocok Ana Maryani Berutu Cynthia Rizka Riani DAROJATUL ULYA Dede Heri Yuli Yanto Deden Saprudin Dedy Duryadi Solihin DEDY DURYADI SOLIHIN Deford Cristy Birahy DERI YURATMOKO DEWI APRI ASTUTI Dewi Asnita Dewi, Fitria Diana, Milsa Solva DIMAS ANDRIANTO DINI NURDIANI Dwi Ambarawati Dwi Andreas Santosa DWI SURYANTO DWI SURYANTO Dyah Iswantini Eka Putri EKA RURIANI Elly Rosyidah Engelhaupt, Martin Esti Utarti FAHRRUROZI FAHRRUROZI Fahrurrozi Fahrurrozi FAHRURROZI FAHRURROZI Fahrurrozi Fahrurrozi Fathiah, Muhammad Fadhil Fathin Hamida Faturrahman Faturrahman FATURRAHMAN FATURRAHMAN Ferry Mutia FERY MUTIA Fitri, Ainissya Fitria Dewi Glisina Dwinoor Rembulan GRISELDA HERMAN NATADIPUTRI Hairani, Atikah Hamim Hamim Hamtini - Hamtini Hanni Tsaaqifah Hari Eko Irianto Hartono, Faisal Diniamal Hasrul Satria Hasrul Satria Nur Hasrul Satria, Hasrul I Komang Gede Wiryawan Ici Dianita Ifah Munifah Ika Rahmatul Layly Iman Rusmana Inayah, Mazidah Noer IRA ERDIANDINI, IRA IRFAN ANWAR FAUZAN IS HELIANTI Isra Janatiningrum ISRA JANATININGRUM It Jamilah La Ode Wahidin LAKSMI AMBARSARI Lenni Fitri Lenni Fitri Lilis Nuraida Lily Nathalia Loli Natalia Lukman, Zulfiqar M. EDY SOFIYANTO Maggy T Suhartono Maggy T Suhartono Maggy Thenawidjaja Suhartono Maggy Thenawidjaja Suhartono Maggy Thenawidjaya Suhartono Mahsunah, Anis Herliyati Malikah Azizah Manguntungi, Baso Maranatha, Besty Mareistia Fassah, Dilla Maria Sugiharti MARINI WIJAYANTI Marini Wijayanti MARTIN ENGELHAUPT Mernawati, Mernawati Muhammad Nur Kholis, Muhammad Nur Muhammad Subhan Hamka MUHAMMAD ZAIRIN JUNIOR MUNTI YUHANA NANIK RAHMANI Nanik Rahmani Nanik Rahmani Naswandi Nur Natalia, Loli Nathalia, Lily NI WAYAN SRI AGUSTINI Niken Financia Gusmawati NISA RACHMANIA MUBARIK Nisfatin Shofiana Nunuk Widhyastuti NUNUK WIDHYASTUTI Nur Richana Nur, Hasrul Satria Nurfadhilla Rahmadhani Nurhasna, Aprilia Prima Agung Prihandono Puspitasari, Dian Japany Rahayu Wulan RAHAYU WULAN Rahayu Wulan RAMADHAN, ZULFA AULIA Rika Indri Astuti RIKA RAFFIUDIN Rismawati . Rizky Anggreandari RONI RIDWAN RONI RIDWAN Rosyidah, Elly RUSLI FIDRIYANTO SAFITRI NURLAELA SHANTI RATNAKOMALA Shanti Ratnakomala Sidiq, Muhammad Raffel SINTA AGUSTINA SINTA AGUSTINA SINTA AGUSTINA Sipriyadi Sipriyadi Sipriyadi Sitti Rahbiah Akram SRI ESTUNINGSIH Sri Estuningsih Sri Koerniati Sri Listiyowati Sri Suharti Stanislaus Aditya Agung SUHARSONO Sumarni Nompo Sunarti, Titi Suyono, Meisy Nawang Titi Candra Sunarti TRIO HENDARWIN Trio Hendarwin TRIO HENDARWIN Tryanisa Ridla Amalia Turnip, Enita Romasni UMI FATMAWATI Umi Fatmawati Vestika Iskawati Wahidul Hijah Wahyu Afrilasari Wahyu Widosari WENANG MAHARSIWI WIDANARNI WIDANARNI Widosari, Wahyu WILFADRI PUTRA JONESTI WULAN, RAHAYU Yantyati Widyastuti Yantyati Widyastuti Yaya Rukayadi YAYA RUKAYADI YAYA RUKAYADI Yopi - YOPI YOPI Yopi Yopi Yopi Yopi Yopi, YULIANA, META YULIN LESTARI Zahrani, Siti Mutia