Valorization of sustainable vegetable oil deodorizer distillate as a novel fatliquor

The deodorizer distillate(DD)is a byproduct of vegetable oil processing industry and is rich in functional bioactive components.This study aimed to employ phosphorylation modification for DD to produce a new sustainable fatliquor.The bioactive ingredients in DD,namely fatty acids,sterols,and tocopherols,were determined by using HPLC and GLC.The results revealed that the DD sample contained a high percentage of unsaturated fatty acids(72.3%)and high levels ofγandδ-tocopherols(54.8%and 31.60%,respectively).Mechanical parameters(tensile strength,elongation at break,and tear strength)of leather were improved after being treated with the prepared fatliquor emulsion.Eventually,SEM showed that the texture of the fatliquored leather had been remarkably enhanced.Moreover,the fatliquored leather possessed effective antibacterial effect against the specified+ve,-ve bacteria,and Candida albicans microorganisms.The strength,fullness,soft handle,and elasticity of leather were all improved,and the grain of leather was protected from becoming loose after drying.

油脂加工副产物—脱臭馏出物的综合利用

油脂脱臭馏出物是植物油精炼脱臭时的副产物,含有多种活性成分,提取、纯化和应用这些活性成分已成为研究的热点。为了促进脱臭馏出物的综合开发利用,本文综述植物油脱臭馏出物中天然VE、植物甾醇、角鲨烯、脂肪酸甲酯等多种活性成分的理化性质、提取纯化方法及应用延伸。结果表明,植物油脱臭馏出物是天然VE的较好来源,且不同来源的脱臭馏出物中提取的天然VE的组成有所不同。从脱臭馏出物中提取VE多采用酯化法、尿素络合法、酶法、溶剂萃取法、分子蒸馏法、离子交换法、吸附法、柱层析法、超临界萃取法等两种或多种方法的组合形式进行富集和纯化。目前市场上的天然VE的品种大致分为四类：混合生育酚、天然α-生育酚、天然α-生育酚衍生物、混合生育酚/天然α-生育酚粉末等。从脱臭馏出物中提取植物甾醇通常分两步,先从原料中提取粗甾醇,然后采用溶剂结晶、络合法、吸附法、酶法等精制方法精制甾醇。植物甾醇的应用延伸包括水溶性植物甾醇、谷甾醇、豆甾醇、4AD、ADD和多种甾体皮质激素药物。从脱臭馏出物中提取角鲨烯通常是先提取不皂化物,然后从不皂化物中采用超临界CO2萃取、色谱分离、分子蒸馏法、吸附分离法等进一步提取角鲨烯。脱臭馏出物中脂肪酸的含量一般在25%~75%之间,这些脂肪酸在制备天然VE和植物甾醇的过程中转化为脂肪酸甲酯,而以脂肪酸甲酯为原料可制备生物柴油、单双甘油酯、环氧脂肪酸甲酯、表面活性剂和洗涤剂等产品,使得油脂脱臭馏出物得到进一步的综合利用。

植物油脱臭馏出物中生物活性成分提取方法研究进展

系统地介绍植物油脱臭馏出中的植物甾醇、生育酚、角鲨烯、脂肪酸甾醇酯、碳氢化合物、醛和酮等生物活性成分,归纳提取生物活性成分的化学方法、物理方法和酶方法,并比较各种方法的优劣。

植物油脱臭馏出物生物活性成分提取与纯化技术研究进展

油脂脱臭馏出物是植物油精炼脱臭时副产品,含有生育酚、甾醇、角鲨烯等生物活性成分,提取和纯化这些活性成分已成为研究热点;该文综述植物油脱臭馏出物生物活性成分提取与纯化技术研究进展。