Study on the influence of different pulping processes on the quality of soymilk
FAN Liu1,2,3, LIU Haiyu1,2,3, ZHAO Liangzhong1,2,3*, SHEN Guoxiang1,2,3, DEND Yaxin1,2,3, XIE Chunping1,2,3, WU Jiang1,2,3, MO Xin1,2,3
1(College of Food Science and Chemical Engineering,Shaoyang University,Shaoyang 422000,China); 2(Soybean Processing Techniques of the Application and Basic Research Base in Hunan Province,Shaoyang 422000,China); 3(Hunan Provincial Engineering Research Center for Fruits and Vegetables Cleaning Processing,Shaoyang 422000,China)
Abstract: In order to explore the effects of different pulping processes on the quality of soymilk, the organoleptic, nutritional,physicochemical indexes of soymilk produced by the uncooked process, single pulp & residue co-cooking process, double pulp & residue co-cooking process and the hot water extract process were evaluated. In addition, correlation analysis was carried out for each index. The highest sensory score of soymilk was double pulp and residue co-cooking process, with a score of 87.7. Hot water slurry process score of 87.3 points, ranked second. The soymilk from double pulp residue co-cooking process produces a soybean milk stability coefficient of 94.9%, a protein content of 3.890 g/100 g, a fat content of 1.814 g/100 g, and a total sugar content of 1.267 g/100 g, which has the best stability and highest content nutrients. The particle size of the soymilk obtained by the four pulping processes is mainly distributedbetween0.1 μmand2 μm. The maximum particle size of the soymilk is secondary pulping process which D50 and D[4,3] is 0.500 μm and 0.547 μm respectively, and the particle size of the raw slurry process soymilk is minimum, which is 0.423 μm, 0.454 μm respectively. Correlation analysis indicated that there is a significant positive correlation between protein content and viscosity, soymilk stability, average particle size and sensory score (P<0.01), and the correlation coefficients were 0.968, 0.843, 0.979, 0.975, respectively. Protein content is negatively correlated to sedimentation velocity significantly , the correlation is -0.974. Under the same conditions, the secondary pulping process is more suitable for soymilk processing.
范柳,刘海宇,赵良忠,等. 不同制浆工艺对豆浆品质的影响[J]. 食品与发酵工业, 2020, 46(7): 148-154.
FAN Liu,LIU Haiyu,ZHAO Liangzhong,et al. Study on the influence of different pulping processes on the quality of soymilk[J]. Food and Fermentation Industries, 2020, 46(7): 148-154.
LI Y, GUAN R, LIU Z, et al. Genetic structure and diversity of cultivated soybean (Glycine max (L.) Merr.) landraces in China[J]. Theoretical & Applied Genetics, 2008,117(6):857-871.
[2]
QIU L J, CHANG R Z, SINGH G. The origin and history of soybean.[J]. Soybean Botany Production & Uses, 2010:1-23.
RIVAS M, GARAY R P, ESCANERO J F, et al. Soy milk lowers blood pressure in men and women with mild to moderate essential hypertension[J]. Journal of Nutrition, 2002,132(7):1 900-1 902.
[10]
MITCHELL J H, COLLINS A R. Effects of a soy milk supplement on plasma cholesterol levels and oxidative DNA damage in men-a pilot study[J]. European Journal of Nutrition, 1999,38(3):138-143.
KYOKO T, KYOKO C, TOMOTADA O. Effect of components extracted from okara on the physicochemical properties of soymilk and tofu texture[J]. Journal of Food Science, 2010,72(2):C108-C113.
2020, Vol. 46 
