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| Adsorption effects of magnesium silicate on oil-tea camellia seed oil withhigh acid value |
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| DOI： |
| KeyWord:oil-tea camellia seed oil magnesium silicate color value acid value |
| FundProject:浙江省科技重点研发计划（2017C02003）；硅酸镁（滤油粉）精制山茶油工艺优化及效益评估（2020330101000721） |
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| Abstract: |
| The adsorption effects of magnesium silicate on high acid value oil-tea camellia seed oil were discussed by measuring acid value, peroxide value and color value of oil-tea camellia seed oil. The results showed that the acid value of oil-tea camellia seed oil decreased obviously with the prolonging of adsorption time. Magnesium silicate could decrease the peroxide value of oil-tea camellia seed oil. Magnesium silicate could remove yellow pigment from oil-tea camellia seed oil effectively, as well as red pigment. The optimal adsorption conditions of magnesium silicate were obtained as follows: magnesium silicate dosage 1.5%, adsorption temperature 80 ℃, adsorption time 20 min. Under these conditions, the reduction rates of the acid value, color value a* and b* of oil-tea camellia seed oil were 8.52%, 1377% and 40.88% respectively. |
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