Results Utilizing lactic acid dissolution and alcohol precipitation technology could prepare granules of chitosan lactate, which had characteristic absorption peak in infrared spectrum.

结果利用乳酸溶解和醇沉淀工艺可制备出壳聚糖乳酸盐颗粒，在红外光谱中具有特征性吸收峰。

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This paper reviewed the general situations of synthesis processes and application of poly (lactic acid), and concentracted on the update progress situations on synthesis technology and application.

较全面地介绍了聚乳酸的合成方法和应用现状，重点阐述了聚乳酸的合成技术和应用的最新进展。

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The technology for improving the nutritional components and protein contents of lactic acid residue through solid fermentation with compound strains were studied.

笔者研究了以乳酸废渣为原料，通过混合菌种发酵，以改善乳酸废渣的营养成分，提高其蛋白质含量的工艺。

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