Specificity of the lipase from cottonseed

Chemistry of Natural Compounds - 1. The lipase from cotton seeds possesses lipase, esterase, and tweenase activities. 2. The broad substrate specificity of the lipase is connected with its capacity...     

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。     

Homogeneous lecithin from cottonseed meal

The possibility of using industrial cottonseed meal for the production of homogeneous lecithin has been shown.Institute of the Chemistry of Plant Sciences, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 295–296, May–June, 1984.     

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.     

Phospholipids from industrial cottonseed meal

The qualitative and quantitative compositions of the phospholipids isolated from industrial cottonseed meal have been studied. The meal contains a mixture of phospholipids that may be a source for the production of individual phospholipids. The total and position distributions of the fatty acid radicals in individual phospholipids have been determined.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 698–700, November–December, 1983.     

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.     

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.     

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.     

Extraction of cottonseed meal

Summary A method for extracting protein in a weakly acid medium has been developed which ensures, apart from a satisfactory yield and a good-quality main product, the isolation of a valuable medicinal preparation — phytin.Institute of Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 849–952, November–December, 1977.     

Lipids of cottonseed kernels

The free, bound, and strongly bound lipids of the seed kernels of the cotton plant of variety 108-F have been studied. It has been shown that the free and bound lipids include 97.3% and 47.6% of neutral lipids, respectively. The polar lipids consist mainly of phospholipids and glycolipids. Two groups of glycolipids — sterol glycosides and glycosylglycerides — have been isolated and their compositions have been determined.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 435–438, July–August, 1983.     

Extraction of cottonseed oil

Summary It has been shown that oil of the best quality is obtained on its selective extraction by hexane. Subsequent extraction from the meal of gossypol by 70–80% aqueous, and then dry, acetone permits meal to be obtained with a light cream color containing 0.02% of free gossypol. The omission of dry acetone leads to a darkening of the meal.It has been established that it is possible to achieve a reduction in the consumption of solvents on the direct extraction of cottonseed flake by using weak oil and gossypol miscellas.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 170–173, March–April, 1978.     

Evaluation of polyblends of cottonseed protein and polycaprolactone plasticized by cottonseed oil

Recently, there has been an increasing trend toward replacing conventional fossil-based plastics with bioplastics that are eco-friendly and biodegradable. In this work, blends of polycaprolactone (PCL) and cottonseed protein plasticized with cottonseed oil were made and analyzed for their mechanical, adhesive, and thermal properties. The addition of water-washed cottonseed meal (WCSM) to PCL increased the Young’s modulus but decreased the tensile strength and elongation-at-break of PCL. The addition of cottonseed oil to the PCL/WCSM blend kept the tensile strength about the same but enhanced the elongation. The PCL blends with WCSM and cottonseed protein isolate gave about the same mechanical properties, both somewhat better than the PCL/soy protein isolate blend. As plasticizers, cottonseed oil performed slightly better than coconut oil, both better than poly(ethylene glycol). The addition of WCSM and cottonseed oil (up to a PCL:WCSM:plasticizer ratio of 60:40:20) did not change the adhesive performance of PCL on fiberboard. Thus, the combination of PCL/cottonseed protein/cottonseed oil seems to be a viable bioplastic, and one possible application for this material may be in the hot melt adhesive area.     

Composition of the lipids of cottonseed hulls

The lipids of the hulls of seeds of the cotton plant have been studied. It has been established that the fatty acid compositions of the triacylglycerols, the sterol esters, the free fatty acids, the monoacylglycerols, and the polar fractions are identical. However, in the waxes the set of acids is more diverse and is distinguished by a high content (62%) of palmitic acid.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 44–47, January–February, 1981.