Zero-trans shortening using palm stearin and rice bran oil
Zero-trans shortening using palm stearin and rice bran oil
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DOI：
10.1007/s11746-004-0914-7
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发表时间：
2004-04
期刊：
影响因子：
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通讯作者：
P. Mayamol;T. Samuel;C. Balachandran;A. Sundaresan;C. Arumughan
中科院分区：
文献类型：
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作者：
P. Mayamol;T. Samuel;C. Balachandran;A. Sundaresan;C. Arumughan
本文报道了几个中试试验，使用棕榈硬脂-米糠油（PS-RBO）混合物，明显不含转脂肪酸（TFA），而商业产品中发现含有18-27%的TFA。研究了搅拌速率、结晶温度、共混物组成等工艺条件对缩短剂晶体结构的影响。采用DSC、x射线衍射（XRD）、高效液相色谱（HPLC）和红外光谱（FTIR）技术对产物的理化性质进行了评价。含有50% PS和50% RBO的配方具有与氢化商业“钒”样品相似的熔化和冷却特性。FA组成分析表明，所配制的起酥油中C18∶2PUFA含量为15 ~ 19%。试验起绒的生育酚和生育三烯酚含量在850 ~ 1000ppm之间，谷维素含量高达0.6%。XRD研究表明，缩短剂的晶型以最稳定的β′型为主，不需要的β′型较少。
Several pilot-scale trials reported in this paper, using palm stearin-rice bran oil (PS-RBO) blends, obviously did not containtransFA (TFA), whereas the commercial products were found to contain 18–27% TFA. The effects of processing conditions such as rate of agitation, crystallization temperature, and composition of the blends on the crystal structure of shortenings were studied. The products were evaluated for their physicochemical characteristics using DSC, X-ray diffraction (XRD), HPLC, and FTIR techniques. The formulation containing 50% PS and 50% RBO showed melting and cooling characteristics similar to those of hydrogenated commercial “vanaspati” samples. Analysis of the FA composition revealed that the formulated shortenings contained 15–19% C18∶2PUFA. Tocopherol and tocotrienol contents of the experimental shortenings were in the range of 850–1000 ppm with oryzanol content up to 0.6%. XRD studies demonstrated that the crystal form in the shortenings was predominantly the most stable β′ form, and there was less of the undesirable β form.