Sodium stearate and sodiumpalmitate produced by the reaction of saponifiable oil and alkali of degreasing solution were removed by filtration.
皂化性油和除油液中的碱作用生成的硬脂酸钠及棕榈酸钠采用过滤的方法排除；
2
L-ascorbyl palmitate in the methanol extract is hydrolyzed under acid condition, and 2, 6-dichlorophenol indophenol sodium solution is titrated with the hydrolysate.