Isolation of proteins from cottonseed meal II. The salt method

Summary On the basis of the results of a study of the amino acid compositions of various protein fractions from cottonseed flour and meal it has been established that the fraction of salt-soluble proteins (globulins) does not change its composition and properties in the processing of cotton seeds. The yield of protein from the industrial meal using the salt-extraction method is 16%.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 626–628, September–October, 1974.     

Isolation of phytin from cottonseed meal

Summary A method has been developed for isolating phytin from the waste material (mother solution after the precipitation of protein) obtained in the production of fodder protein from cottonseed meal.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 530–532, July–August, 1976.     

Isolation of raffinose from cottonseed meal

The solubility of raffinose in various solvents has been studied. The influence of several factors on the process of extracting raffinose from cottonseed meal has been investigated. The optimum conditions of the extraction process have been established.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 695–698, November–December, 1984.     

Isolation of raffinose from cottonseed meal

The solubility of raffinose in various solvents has been studied. The influence of several factors on the process of extracting raffinose from cottonseed meal has been investigated. The optimum conditions of the extraction process have been established.     

Isolation of raffinose from cottonseed meal. II. Utilization of production wastes

The course of production has been monitored over the stages of the technological process with the aim of identifying the main losses of raffinose. The fractions were analyzed by a chromato-photometric method. It was established that the main losses of raffinose took place at the stage of purifying the crude extract with gasoline and in crystallization. The composition of the wastes from the production of raffinose has been studied and possible methods for utilizing them have been found.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 418–421, July–August, 1986.     

Isolation of raffinose from cottonseed meal. II. Utilization of production wastes

The course of production has been monitored over the stages of the technological process with the aim of identifying the main losses of raffinose. The fractions were analyzed by a chromato-photometric method. It was established that the main losses of raffinose took place at the stage of purifying the crude extract with gasoline and in crystallization. The composition of the wastes from the production of raffinose has been studied and possible methods for utilizing them have been found.     

Composition of the carbonyl compounds of extraction cottonseed meal

Summary On the basis of a quantitative analysis of the volatile carbonyl compounds present in acetone-treated meal it has been shown that they contain a total of about 11 compounds, the main ones of which are acetone and mesityl oxide.It has been established that the moist heat treatment of extraction meal does not lead to the complete elimination of these compounds, and under severe conditions it actually leads to an increase in the amount of carbonyl compounds through degradation of, mainly, the fatty fraction of the meal.The amount of assimilable lysine in the meal decreases simultaneously.Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 694–699, November-December, 1978. Original article submitted June 15, 1978.     

棉籽现场碱催化转酯化联产生物柴油和无毒棉粕

通过棉籽现场碱催化转酯化联产生物柴油和无毒棉粕,考察了棉仁中水的质量分数、粒径对产物中脂肪酸甲酯（FAME）的质量分数和棉粕中游离棉酚（FG）质量分数的影响;对反应过程中的醇油摩尔比、反应时间、催化剂用量、反应温度进行了单因素和正交实验考察。实验得到的反应适宜条件为,棉仁含水量在1.92%左右,棉仁粒径小于0.335mm,反应醇油摩尔比135∶1,反应3h,甲醇中氢氧化钠浓度0.10mol/L,反应温度30℃。在上述反应条件下,反应产物中甲酯的质量分数可达97%,棉粕中游离棉酚的质量分数为0.031%,低于FAO规定的国际标准。     

Preparation of phytin from cottonseed meal

Summary The optimum conditions for the drying of phytin from cottonseed meal have been determined.Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 767–769, November-December, 1978. Original article submitted June 30, 1978.     

Enzymatic-chemical isolation of lipids, proteins, and gossypol from cotton seeds and meal. I

An enzymatic-chemical method of isolating the complex of lipids, gossypol pigments, and water-soluble proteins from cotton seeds and meal has been developed which permits: a) the achievement of the maximum yield of all types of lipids without their degradation; b) a rise in the qualitative and food value of the oil and protein products isolated from the seeds, with an increase in the solubility of the latter; c) the extraction from cotton seeds of more than 75% and from cottonseed meal of 42% of the free gossypol. The method, in combination with Folch's procedure, is suitable for the quantiative estimation of the lipids, strongly bound to the protein of the nucleus.Institute of Chemistry of Plant Substances, Uzbek Academy of Sciences, Tashkent. Translated from Khimiya Prirodynykh Soedinenii, No. 5, pp. 621–628, September–October, 1991.     

Enzymatic-chemical isolation of lipids,proteins, and gossypol from cotton seeds and meal. I

An enzymatic-chemical method of isolating the complex of lipids, gossypol pigments, and water-soluble proteins from cotton seeds and meal has been developed which permits: a) the achievement of the maximum yield of all types of lipids without their degradation; b) a rise in the qualitative and food value of the oil and protein products isolated from the seeds, with an increase in the solubility of the latter; c) the extraction from cotton seeds of more than 75% and from cottonseed meal of 42% of the free gossypol. The method, in combination with Folch's procedure, is suitable for the quantiative estimation of the lipids, strongly bound to the protein of the nucleus.     

Isolation of gossypol from hexane-acetone miscellas

Summary 1. The influence of the nature of the alkali on the degree of extraction of gossypol from hexane — acetone miscellas by solutions of NH₄OH, borax, sodium carbonate, and caustic soda has been studied. It has been established that the maximum extraction of gossypol is achieved by using 2% caustic soda solution.2. It is proposed to treat the aqueous layer formed in the decomposition of the sodium gossypolate with sodium chloride, which enables the yield of gossypol to be raised to 90%.3. It has been shown that the concentration of the miscella in order to eliminate acetone does not lower the yield of gossypol on its isolation from caustic soda solution.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 177–180, March–April, 1978.