精炼过程中大豆油色素含量的变化及叶绿素的脱除
Changes of pigment content and removal of chlorophyll in soybean oil during refining process
  
DOI:
中文关键词:  大豆油  精炼  叶绿素  叶黄素  β-胡萝卜素  脱除
英文关键词:soybean oil  refining  chlorophyll  lutein  β-carotene  removal
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Author NameAffiliation
DONG Yingzhang, CHEN Qiujun, ZHOU Meisheng, YANG Longjuan, WANG Lufei, LI Cui COFCO Oil (Heze) Co. , Ltd. , Heze 274000, Shandong, China 
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中文摘要:
      为了改善成品大豆油外观发绿、发暗的情况,测定了大豆油精炼过程中3种色素(叶黄素、β-胡萝卜素和叶绿素)的含量,并研究了叶绿素的脱除。结果表明:在现有精炼工艺条件下,叶黄素、β-胡萝卜素可以被完全脱除,当大豆原油的叶绿素含量大于2.0 mg/kg时,叶绿素含量很难降到0.20 mg/kg以下;添加0.075%的活性炭对大豆原油进行脱色可使叶绿素含量不超过0.20 mg/kg。综上,通过目前加工手段及调整加工助剂,基本可以脱除大豆油中的色素。
英文摘要:
      In order to improve the greenish and dark appearance of refined soybean oil, the contents of three pigments (lutein, β-carotene and chlorophyll) in soybean oil during the refining process were determined,and the removal of chlorophyll was investigated.The results showed that lutein and β-carotene could be completely removed under the existing refining process conditions. When the chlorophyll content in crude soybean oil was above 2.0 mg/kg, it was diffcult to reduce the content of chlorophyll to lower than 0.20 mg/kg. Adding 0.075% of activated carbon for decolorization of crude soybean oil could reduce chlorophyll content to not more than 0.20 mg/kg. In summary, the pigments in soybean oil can be basically removed by current processing methods and adjusting processing aids.
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