Zulianatul Hidayah, Zulianatul
Jurusan Tanaman Pangan dan Hortikultura Politeknik Pertanian Negeri Kupang

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KARAKTERISTIK TEPUNG SORGUM TERMODIFIKASI DENGAN PROSES FERMENTASI DENGAN MENGGUNAKAN YEAST INDIGENOUS SORGUM Hidayah, Zulianatul; Sir, Rikka Welhelmina
Jurnal Sains dan Teknologi Pangan Vol 6, No 6 (2021): Jurnal Sains dan Teknologi Pangan
Publisher : JURUSAN ILMU DAN TEKNOLOGI PANGAN, UNIVERSITAS HALU OLEO

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (578.385 KB) | DOI: 10.33772/jstp.v6i6.22860

Abstract

ABSTRACTThe purpose of this study was to examine the physicochemical characteristics of fermented sorghum flour using indigenous sorghum yeast. The study used a completely randomized factorial design with various fermentation times (24, 48, 72 hours) as the first factor and the concentration of indigenous sorghum yeast starter (2.5%, 5%, 7.5%, 10%, 12.5%, and 15% w/v) as the second factor in three replications. Parameters observed were physicochemical characteristics including starch content, water content, swelling power, water absorption, and bulk density. The data obtained were analyzed using analysis of variance (ANOVA) (P<0.05) and Duncan's Multiple Range Test (DMRT). The results show that the best-fermented sorghum flour was obtained at 72 hours of fermentation time with a 5% starter. The sorghum flour has a starch content of 74.8%, water content of 10.97%, swelling power of 15.44 g/g, water absorption capacity of 67.58%, and bulk density 0.6 g/ml. Modification by fermentation using indigenous sorghum yeast can improve the physical and chemical properties of sorghum flour. Based on the nutritional content of sorghum flour, it met the quality requirements of Codex Standard 173-1989 in ash, protein, fat, crude fiber, and carbohydrate contents.Keywords:sorghum, modified, yeast indigenous, phisycal and chemical characteristik.ABSTRAKTujuan penelitian ini adalah untuk mengkaji karakteristik fisikokimia tepung sorgum hasil fermentasi dengan menggunakan yeast indigenous sorgum. Penelitian dilakukan dengan menggunakan rancangan acak lengkap pola faktorial dengan lama fermentasi (24, 48, 72 jam) sebagai faktor pertama dan konsentrasi starter yeast indigenous sorgum (2,5%, 5%, 7,5% dan 10%, 12,5% dan 15% b/v) sebagai faktor kedua, menggunakan 3 ulangan. Parameter yang diamati adalah karakteristik fisikokimia meliputi kadar pati, kadar air, sweeling power, daya serap air dan densitas Kamba. Data yang diperoleh dianalisis dengan menggunakan Analisis Ragam (ANOVA) (P<0,05) dan uji lanjut Duncan Multiple Range Test (DMRT). Hasil penelitian menunjukkan bahwa tepung sorghum terfermentasi terbaik didapatkan pada perlakuan lama fermentasi 72 jam dengan jumlah starter sebanyak 5%. Karakterisitik tepung sorgum ynag dimiliki adalah kadar pati 74,8%, kadar air 10,97%, swelling power 15,44 g/g, daya serap air 67,58% dan densitas kamba 0,6 g/ml. Modifikasi dengan fermentasi menggunakan yeast indigenous sorgum mampu memperbaiki sifat fisik dan kimia tepung sorgum. Berdasarkan kandungan gizi pada tepung sorgum telah memenuhi syarat mutu Codex Standard 173-1989 pada kadar, abu, protein, lemak, serat kasar dan karbohidrat.Kata kunci: sorgum, modifikasi, yeast indigenous, sifat fisikokimia
Dragon Fruit (Hylocereus polyrhizus) Wine: Physical, Biochemical, and Organoleptic Preferences Bunga, Senni Juniawati; Sir, Rikka Welhelmina; Hidayah, Zulianatul
Journal of Applied Food Technology Vol 12, No 1 (2025)
Publisher : Dept. Food Technology, Faculty of Animal and Agricultural Sciences, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17728/jaft.25794

Abstract

Dragon fruits (Hylocereus polyrhizus) are considered as one of the nutritious exotic fruits in Asian countries. Juice extracted from these fruits has been processed into wine by spontaneous fermentation. Fermentation was carried out for 21 days, and then wine aging was continued for 3 months. The biochemical properties (tartaric acid, alcoholic content, total soluble solids, reducing sugar content, color, and antioxidant activity) were determined using standard scientific procedures of food characteristics. The results after 3 months of wine aging show that a pH value of 3.51, a tartaric acid of 8.06%, an alcoholic content of 13%, a total soluble solid of 3o brix, a total reducing sugar content of 0.28 g/100 mL, a DPPH activity of 75.79%, and a chroma test score of 13.73. Sensory evaluation showed no differences in flavor, taste, aroma, and overall acceptability between the processed wine and a reference wine. The dragon fruit wine was generally accepted. Therefore, this study requires further comprehensive investigation into the substantial contents of functional compounds such as organic volatile groups and bioactive compounds.