tailieunhanh - Effect of some factors on the quality of black bean sprouts

Black bean sprouts are high in nutritional value with vitamins, minerals, amino acids, fiber, vitamin C and anthocyanin. The study was conducted as following: Black beans were soaked at temperatures of 25 °C, 30 oC, 35 oC, 40 oC and for period of 2 hours, 3 hours, 4 hours, 5 hours. The substrates were surveyed as ash, cotton towel, sand and paper tissue. | An Giang University Journal of Science - 2019 Vol. 6 70 - 79 IBB An Giang University Journal of Science I ISSN 0866 - 8086 EFFECT OF SOME FACTORS ON THE QUALITY OF BLACK BEAN SPROUTS Ho Thi Ngan Ha1 1An Giang University Information Received 01 10 2017 Accepted 02 12 2017 Published 02 2019 Keywords Black bean sprouts soaking substrate sowing density anthocyanin ABSTRACT Black bean sprouts are high in nutritional value with vitamins minerals amino acids fiber vitamin C and anthocyanin. The study was conducted as following Black beans were soaked at temperatures of 25 C 30 oC 35 oC 40 oC and for period of 2 hours 3 hours 4 hours 5 hours. The substrates were surveyed as ash cotton towel sand and paper tissue. Seeds were sown at density of 25 seeds 50 seeds 75 seeds 100 seeds in the same unit area of 60 cm2. The times of irrigation were investigated with once twice three times for the substrate in a day. Finally the study compared the differences in nutrients content of black bean sprouts and green bean sprouts as well as evaluated the sensory of two products. The results of the study showed that soaking black beans at 30oC for four hours gave the best germination ability. The most suitable type of substrate was sand. The appropriate sowing density was 75 seeds 60 cm2. The optimal number of irrigation every day was twice. Nutrients content of black bean sprouts and green bean sprouts were as following Moisture Protid total sugar vitamin C mg mg anthocyanin mg kg 0mg kg . The sensory evaluation result showed that black bean sprouts were more highly appreciated by consumers for structure and preference. 1. INTRODUCTION Bean sprout is a kind of vegetable that is found in many popular traditional foods in the world especially in Asian countries like Vietnam Japan South Korea Thailand Malaysia China and also well known in Western culinary culture. Bean sprouts have nutrients such as essential amino acids vitamins and .