Food grade macromolecule chitosan purchased from different company were analysed, and the quality criterion of rawmaterial were determined.
对不同生产厂家的食品级大分子壳聚糖原料进行了对比分析，确定了原料的质量要求。
2
Organic processors need a good recording system, allowing verification whether the quantity of purchasedrawmaterial is consistent with the quantity of finished product sold.