企鹅专家讲评油脂色泽或测试脱色工艺效果的标

　

       浸出设备；企鹅专家讲评油脂色泽或测试脱色工艺效果的标准！
Standard for assessing the effect of the color or test of the oil
油脂脱色的办法许多，工业生产中运用广泛的是吸附脱色法。此外还有加热脱色，氧化脱色、化学试剂脱色法等。事实上，在油脂精炼进程中，油中色素的脱除并不全赖脱色工段，在碱炼、酸炼、氢化、脱臭等工段都有辅佐的脱色作用。
The method of oil bleaching is the most widely used in industrial production. In addition, heating, oxidation, decolorization, chemical reagent, etc.. In fact, in the oil refining process, removal of pigment in the oil does not depend on bleaching section, alkali refining, acid refining, hydrogenation, deodorization section assisted in decolorization.
碱炼可除掉酸性色素，如棉籽油中的棉酚可与烧碱作用，因而碱炼可对去掉棉酚。此外，碱炼生成的番笕能够吸附类胡萝卜素和叶绿素。
Alkali refining can get rid of acidic pigment, such as interaction with caustic soda and alkali refining can be compared to completely remove the gossypol gossypol in cotton seed oil. In addition, alkali refining generated soap can adsorb carotenoid and chlorophyll.
但番笕的吸附才干是有限的，如碱炼仅能去掉约25%的叶绿素。
But the adsorption ability of soap is limited, such as alkali refining can only remove about 25% of chlorophyll.
所以单靠碱炼脱色是不可的，碱炼后的油脂还要用活性白土进一步的进行脱色处理。酸炼对去掉油脂中黄色和赤色较为有用，分外关于质量较差的油脂作用对比明显。氢化能损坏可恢复色素。
So rely on alkali refine bleaching is not, the refined oil will be further decolorization of active floridin. To remove acid refining oil in yellow and red is more useful, particularly about the poor quality of oil contrast effect is obvious. Hydrogenation can damage the recoverable pigment.
如类胡萝卜素分子内含有许多共轭双键，易氢化，氢化后红、黄色褪去。叶绿素中也含有少数量共轭和非共轭双键，氢化时有些叶绿素被损坏。脱臭可去掉热活络色素。
Such as carotenoid molecules containing a number of conjugated double bonds, hydrogenation, hydrogenation, red, yellow. Chlorophyll also contains a certain number of conjugated and non conjugated double bonds, some of the time when the hydrogen is damaged. Deodorization can remove heat activating pigment.
类胡萝卜素在高温高真空条件下分化而使油脂褪色，它适用于以类胡萝卜素为首要色素的油脂。
Carotenoids in high temperature and high vacuum conditions to differentiate and make the oil fade, it is suitable for the class of carotenoids as the primary pigment of oil.
脱色工段的作用首要是脱除油脂中的色素，一同还能够除掉油脂中的微量金属，除掉残留的微量皂粒、磷脂等胶质及一些有臭味的物质，除掉多环芳烃和残留农药等。
Bleaching section's primary role is to remove grease of pigment together can also trace metals get rid of grease and remove residual trace soap tablets, phospholipids and other gelatinous and some smelly substance, get rid of polycyclic aromatic hydrocarbons (PAHs) and pesticide residues.
分外用活性炭作脱色剂时，可有用地除掉油脂中分子量较大的多环芳烃，而油脂的脱臭进程只能除掉分子量较小的多环芳烃。
Especially with active carbon as a bleaching agent, can be used to remove the molecular weight of a large amount of polycyclic aromatic hydrocarbons, and the process of the removal of oil can only get rid of the smaller molecular weight polycyclic aromatic hydrocarbons.
判定油脂色泽或查验脱色技能作用的规范，现在通用的有两种办法。关于淡色粗油、脱酸油或全精制油及其成品，多以罗维朋色度计规范油槽测得的黄色和赤色色度来标明;
To determine the role of oil color or identification of the role of bleaching skills, and now there are two common ways of international. A pale crude oil, acid oil or fully refined oil and refined, with Lovibond colorimeter meter standard oil tank measurement of yellow and red color to mark;
关于深色油脂，因为罗维朋色度计不能满足比色的央求，则多以分光光度计在波长400～700nm间测得的油脂透光曲线或在固定波长下测得的油脂透光率来标明。
On the dark oil, because Luo Weipeng can not meet the color of color than the color of the request, then more than the wavelength of 400 ~ 700nm measured by the wavelength of the oil transmission curve or in fixed wavelength measured by the oil transmittance.
油脂脱色的意图，并非理论性地脱尽悉数色素，而在于取得油脂色泽的改进和为油脂脱臭供给合格的资料油品。
The intention of oil bleaching is not to be a theoretical way to remove all the pigment, but to achieve the improvement of the color of oil and grease and oil to provide a qualified oil.
因而，脱色油脂色度规范的拟定，需依据油脂及其成品的质量央求，以及力求在较低的损耗下取得油色在较大程度上的改进为度。
So oil decolorization color standard formulation, to beg on oil and its product quality, and strive to in the lowest consumption made cream in the greatest degree of improvement for the degree.

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