Flavor characteristics of rice-grape wine with starch-hydrolyzing enzymes |
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Authors: | Hwan-Ung Yong Tae-Soo Lee Jae-Sik Kim Hyung-Hee Baek Bong-Soo Noh Sung-Jun Lee Jong-Tae Park Jae-Hoon Shim Dan Li In-Hee Hong Dang Hai Dang Nguyen Phuong Lan Tran Thi Lan Huong Nguyen Ershita Fitria Oktavina Jung-Wan Kim Hee-Kwon Kang Kwan-Hwa Park |
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Affiliation: | 1167. Department of Biology, University of Incheon, Incheon, 406-772, Korea 2167. Podomaul Co., Ltd., Yeongcheon, Gyeongbuk, 770-911, Korea 3167. Department of Food Engineering, Dankook University, Cheonan, Chungnam, 330-714, Korea 4167. Department of Food Science and Technology, Seoul Women’s University, Seoul, 139-774, Korea 5167. Department of Food Bioscience and Technology, Korea University, Seoul, 136-713, Korea 6167. Department of Food Science, Chungnam National University, Daejeon, 305-764, Korea 7167. Department of Food Science and Nutrition, Hallym University, Chuncheon, Gangwon, 200-702, Korea 8167. Department of Food Science, Changchun University, Changchun, 130022, China 9167. Department of Foodservice Management and Nutrition, Sangmyung University, Seoul, 110-743, Korea
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Abstract: | A brewing process for rice-grape wine, in which rice powder and grapes are concurrently fermented, was developed. Rice powder was mixed with α-glucosidase, glucose isomerase, and yeast, and then incubated for 2 days at 25°C. Then a mixture of ‘Muscat Baily A’ and ‘Campbe Early’ grape must was added to the fermented mixture of rice and maintained at 4°C to allow for complete ethanol fermentation. The rice-grape wine contained 11.6% ethanol, compared to 9.6% ethanol for grape wine. The aroma profile revealed that 2-methyl-1-propanol, 2-methyl propyl acetate, and phenethyl acetate were in greater abundance in the rice-grape wine, whereas ethyl hexanoate, diethyl succinate, and ethyl decanoate were more abundant in the grape wine. The esters formed from fatty acids and ethanol increased during 2 years of storage for both wines. An electronic nose analysis revealed no significant difference in the aromas of the rice-grape and grape wine samples. |
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