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| 硅酸镁对高酸值油茶籽油的吸附效果 |
| Adsorption effects of magnesium silicate on oil-tea camellia seed oil withhigh acid value |
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| DOI： |
| 中文关键词: 油茶籽油 硅酸镁 色值 酸值 过氧化值 |
| 英文关键词:oil-tea camellia seed oil magnesium silicate color value acid value |
| 基金项目: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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| 中文摘要: |
| 通过测定油茶籽油的酸值、过氧化值和色值，研究了硅酸镁对高酸值油茶籽油吸附效果的影响。结果表明：随着吸附时间的延长，油茶籽油的酸值呈明显下降趋势；硅酸镁对油茶籽油过氧化值有一定的降低作用；硅酸镁对脱除油茶籽油中黄色素十分有效，也可以脱除红色素；硅酸镁最佳吸附工艺条件为硅酸镁添加量1.5%、吸附温度80 ℃、吸附时间20 min，在此吸附条件下，油茶籽油的酸值、色值a*、色值b*降低率分别为8.52%、13.77%和40.88%。 |
| 英文摘要: |
| 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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