Soybean price stars the by-product from industry. When the extension through the extraction of oil, when it analyzed the chemical elements found that soybean protein is also a star the price element is quite high. Therefore, a study to determine the processes that remove proteins in extracted from soybean belt the prices to the utilized farming, for example, is a concentrated protein to supplement nutrition is extremely important. In the study as an alternative that can be used as an alternative basis for the utilization of protein from soybean belt the prices. The purpose of this research study (1) the proper extraction of protein from soybean belt the price by extraction, chemical (HCl, NaOH) with different pH value 3:11, 11.5 and 12 two-level extraction temperature is 40 and 60 degrees Celsius and 2 levels of extraction time is 30 and 60. Minutes showed that optimal conditions for extraction of proteins is that the extraction temperature pH 12 60 deg c and 60 minutes 95.99% protein (2) compare the quantity of protein extracted from soybean belt through the extraction of the prices and not through the extraction of oil. It was found that there was not significantly different (p < 0.05) statistics and (3) study of the properties of the extracted proteins, including the ability to dissolve. Are the foam and the occurrence of imanchan found that the four conditions are leaching properties solubility do not differ significantly (p < 0.05) statistics and the melting temperature of 40° c. dissolve. The properties of the protein, which is a foam extraction. It was found that the temperature of 60° c. 30 and 60 minutes with the foam, the most significant (p < 0.05) statistics and the occurrence of imanchan found that the temperature of 60° c. 30 and 60 minutes are the most imanchan occurred significantly (p < 0.05) statistics. From the above data can be used as the basis for applying the protein extracted from soybean belt the prices used as a component of various food products, to add the properties via the following functions.
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