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| Practice of leaching of pressed sesame seed cake and refining of sesame seed oil |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.240254 |
| KeyWord:pressed sesame seed cake leaching deodorization system refined sesame seed oil plasticizers |
| FundProject: |
| Author Name | Affiliation | | ZUO Qing1,XU Kefeng2,ZUO Hui3 | （1.Jiangsu Fengshang Oils & Fats Engineering Technology Co. , Ltd. , Yangzhou 225127, Jiangsu, China
2.Hefei Yanzhuang Edible Oil Co. , Ltd. , Hefei 230031, China
3.Guangzhou Xinmas
Machinery Co. , Ltd. , Guangzhou 510890, China) |
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| Abstract: |
| In order to reasonably utilize the pressed sesame seed cake, with hot pressed (screw press) sesame seed cake and cold pressed (hydraulic press) sesame seed cake as raw materials, refined sesame seed oil was produced by adjusting the leaching and refining production parameters. Hot pressed sesame seed cake and cold pressed sesame seed cake was mixed in a mass ratio of 4∶ 1 for leaching. The refining process conditions for sesame seed oil were adjusted as follows: using food-grade citric acid in degumming, adopting neutral clay and activated carbon (mass ratio of 4∶ 1) for decolorization, moisture content in the oil entering the decolorization section not exceed 0.3%, decolorization temperature 110 ℃ and decolorization time 25 min; transforming the deodorization system, setting the height of the material layer in filling tower at 7 m, changing the four-layer plate tower to two-layer, deodorization temperature not more than 230 ℃, and deodorization time not more than 25 min. The quality indicators of crude sesame seed oil and refined sesame seed oil produced met the national standard requirements. The content of 3-chloropropanol esters and glycidyl esters in refined sesame seed oil were both 0.5 mg/kg, meeting the limit requirements of the European Union. The content of trans fatty acids(1.0%) met the enterpirse standards, and the contents of three kinds of plasticizers and benzo(a)pyrene were all within the national standard limits. The content of asarinin was not more than 10 mg/kg. In conclusion, the leaching and refining process of pressed sesame seed cake is feasible and can be applied in industrial production. |
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