西瓜籽油脂和脂肪酸含量的检测
水分含量和温度对西瓜籽油脂机械提取的影响Influence of moisture content and temperature on mechanical extraction of oil from watermelon (Citrullus lanatus) seeds使用格哈特公司soxtherm索克森全自动快速索氏提取仪，加100ml石油醚，提取3克西瓜籽粉。The oil content in watermelon seeds was determined using the Soxtherm apparatus (Model: Gerhardt, Germany) which works on the principle of solvent extraction. Dried seeds were powdered in a mixer grinder. Three grams of powder was weighed with precision to three decimal places using an electronic digital balance (Model PS 200/2000/C/2-RADWAG, Poland). Powdered seed samples were taken in a cotton thimble and plugged with cotton and placed in preweighed soxtherm jars containing boiling stones. After adding 100 ml of petroleum ether into the jars, the jars were placed in the soxtherm apparatus.
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