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| Progress on pigment and adsorption bleaching of vegetable oil |
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| DOI： |
| KeyWord:vegetable oil pigment adsorption bleaching adsorbent |
| FundProject: |
| Author Name | Affiliation | | ZHANG Wenlong1, HUANG Chengyi2, ZHAO Chenwei1, JIN Qingzhe1, WANG Xingguo1 | 1.School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China
2.Anhui Yuanxin New Material Technology Co., Ltd., Guangde 242237, Anhui, China |
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| Hits: 2004 |
| Download times: 990 |
| Abstract: |
| The pigment in vegetable oil not only affects the color of the oil, but also reduces the quality and storage stability of the oil. Bleaching process is an important process to remove the undesirable color of oils, and adsorption bleaching is the most common bleaching method used in oils enterprises. The sources of pigments in vegetable oils and the influence of the presence of pigments on the nutrition and safety of oils were outlined, the common bleaching methods such as membrane bleaching, light energy bleaching, ultrasonic assisted bleaching, thermal bleaching and adsorption bleaching were briefly introduced, and the progress on the application of adsorbents such as activated white clay, activated carbon, concave convex clay, silica gel and compound decolorant was reviewed. Some problems such as low processing rate of spent white clay in the bleaching process, difficult bleaching of oils with dark color were summarized, and countermeasures (improving the recovery and utilization of oils in spent white clay, and developing targeted bleaching method) were put forward. Finally, the current status of bleaching technology in oil industry and the problems that need to be solved in the bleaching process were considered and prospected. |
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