Black soybeans contain high antioxidant compounds such as isoflavone but mainly in glucoside form, with low antioxidant activities. Fermentation by lactic acid bacteria (LAB) can enhance the antioxidant properties, but its ability is strain-dependent. This study aims to study the ability of Indonesian indigenous LAB, Lactiplantibacillus plantarum WGK 4, Streptococcus thermophilus Dad 11, and Lactiplantibacillus plantarum Dad 13, to enhance the antioxidant properties during black soy milk fermentation. Fermentation was carried out at 37 °C for 24 h. Viable cell, acid production, Folin–Ciocalteu assay, antioxidant activity (DPPH), isoflavone aglycone daidzein and genistein, and β-glucosidase activity were measured every six hours. All LAB strains could grow well during the fermentation of black soy milk. Lactiplantibacillus plantarum WGK 4 produced the highest acid (1.50%). All three LAB strains could enhance antioxidant activity (DPPH) from 24.90% to 31.22–38.20%, followed by increased isoflavone aglycone. All strains could increase daidzein and genistein content, ranging from 61% to 107% and 81% to 132%, respectively. All three Indonesian indigenous LAB enhanced antioxidant properties of black soy milk relatively at the same level and potentially could be used as a starter culture of black soy milk fermentation.
Kelompok Tani Markisa Kampung Markisa Blunyahrejo telah memiliki kemampuan untuk mengolahmarkisa menjadi produk olahan berupa sirup markisa dan selai markisa. Meski demikian, adanya pandemimengakibatkan ketidakaktifan produksi dari sirup dan selai markisa. Oleh karena itu, Kelompok TaniMarkisa Kampung Markisa memerlukan kegiatan pelatihan kembali sebagai bentuk penyegaran danmemotivasi kembali anggota kelompok tani untuk kembali mengolah markisa. Kegiatan pengabdian inibertujuan untuk memotivasi dan menyegarkan kembali Kelompok Tani Markisa, Kampung Markisa,Blunyahrejo, dalam mengolah markisa menjadi produk sirup dan selai markisa. Kegiatan pengabdian terdiridari diskusi dan survey kecil serta kegiatan pelatihan dan praktek bersama. Sirup yang dihasilkan memilikikekentalan menyerupai sirup komersial, sedangkan selai memiliki warna cerah dengan kenampakanmenarik. Setelah mengikuti kegiatan pengabdian, Kelompok Tani Markisa Kampung Markisa, Blunyahrejokembali termotivasi dan memiliki kemampuan untuk mengolah markisa menjadi produk olahan yangmemiliki kualitas lebih baik dibandingkan dengan produk yang telah dibuat sebelumnya.
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