|Table of Contents|

STUDY ON MEASUREMENT TECHNOLOGY OF TOFU AND SOYMILK OUTPUT FOR LARGE AMOUNT OF MINI-SPECIMEN

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2007年02期
Page:
223-229
Research Field:
Publishing date:

Info

Title:
STUDY ON MEASUREMENT TECHNOLOGY OF TOFU AND SOYMILK OUTPUT FOR LARGE AMOUNT OF MINI-SPECIMEN
Author(s):
WANG Chun-e; GAI Jun-yi
Soybean Research Institute of Nanjing Agricultural University National Center for Soybean Improvement National Key Laboratory for Crop Genetics and Germplasm Enhancement,Nanjing 210095
Keywords:
Tofu;  Soymilk;  Output;  Mini-specimen analysis
PACS:
TS214.2
DOI:
10.3969/j.issn.1000-9841.2007.02.022
Abstract:
A rapid mini-specimen technology is the key for germplasm study and genetic improvement of tofu and soymilk output. The objective of the present study was to establish a mini-specimen measurement technology for standardization of tofu and soymilk output in laboratory based on the previous methods. By using FOSS Tecator 1095 Sample Mill with grinding speed of 20，000 r/min,the effects of grinding time,filter sieve size and filtering method for tofu and soymilk output were studied on six diverse 100-seed-weight soybean varieties. The procedure with a grinding time 50 s and filtering through 120 or 100 mesh nylon sieve under 0.098 Mpa with a cycling water vacuum pump for 1 min provided the highest output and lowest error for measurement of dried tofu and soymilk output. A mini-specimen technology for tofu and soymilk output was developed as the following: a specimen of 5.00 g soybean powder ground from dried seed with FOSS Tecator 1095 Sample Mill at 20 000 r/min for 50 s,blended with 150 mL tap water at room temperature for about 2 h to produce a slurry,then filtered through a 120 mesh nylon sieve under 0.098 Mpa with a cycling water vacuum pump to obtain soymilk. To prepare tofu,four tubes of soymilk specimen (20 mL per tube) are heated in water bath at 95 ℃ for 15 min,cooled down to 80℃,then added with supersaturated aqueous solution of CaSO4(0.6 mL per tube) and stirred,coagulating for 30 min,then centrifuged at 16 000 r/min ( 4 ℃) for 10 min to obtain wet tofu. Soymilk and wet tofu are dried in oven at 120 ℃ for 24 h till consistent weight to get dried soymilk and dried tofu.

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Last Update: 2014-10-21