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首页> 外文期刊>Journal of Oleo Science >Effect of saponification on composition of unsaponifiable matter in rice bran oil
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Effect of saponification on composition of unsaponifiable matter in rice bran oil

机译：皂化作用对米糠油中不可皂化物质成分的影响

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摘要

Rice Bran Oil contains a variety of Unsaponifiable Constituents (USC) that are presumed to contribute to the high value of Unsaponifable Matter (USM). The objectives of the present study were to identify and quantify the constituents in USM. The changes that the unsaponifiables undergo during saponification were also quantitatively investigated. While analyzing the percentage of all constituents, the percentage of sterol get increased from 22.46 to 23.77 in USM of crude rice bran oil (CRBO) and 33.42 to 36.79 in USM of refined rice bran oil (RRBO). Oryzanol that comprised 34% of the unsaponifiable in the crude oil by direct estimation was almost eliminated in USM and same in refined oil. The results also revealed the presence of four additional classes of compounds that were quantified in USM (policosanol, fatty aldehydes, triterpene alcohols and potassium salt of oryzanols). Among the four classes of compounds, policosanol contributed high percentage in USM, (43.39% in CRBO and 28.46% in RRBO). Fatty aldehydes, triterpene alcohols and potassium salt of oryzanols together contributed 27.68% and 25.13% of USM from CRBO and RRBO respectively. The HPTLC method employed here thus, accounted for 96.75% by wt of the USM of CRBO and 92.00% by wt of the USM of RRBO.
机译：米糠油包含各种不皂化物（USC），据推测会导致不皂化物（USM）的高价值。本研究的目的是识别和量化USM中的成分。还对不皂化物在皂化过程中经历的变化进行了定量研究。分析所有成分的百分比时，固醇的百分比从粗米糠油（CRBO）的USM中的22.46增加到23.77，从精制米糠油（RRBO）的USM中的33.42增加到36.79。通过直接估计，在原油中不皂化物中占34％的谷维素在USM中几乎被消除，在成品油中也被消除。结果还揭示了在USM中定量的另外四类化合物的存在（聚二十四烷醇，脂肪醛，三萜醇和谷维素的钾盐）。在这四类化合物中，波多固醇在USM中的贡献率很高（CRBO中为43.39％，RRBO中为28.46％）。脂肪醛，三萜醇和谷维素钾盐分别占CRBO和RRBO的USM的27.68％和25.13％。因此，此处使用的HPTLC方法占CRBO USM的96.75 wt％和RRBO USM的92.00 wt％。

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