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In order to investigate the effect of extraction methods, including cold pressing method, soxhlet method and aqueous enzymatic method, on the quality of walnut oil, and explore the key chemical components affecting the antioxidant activity of walnut oil. The physicochemical properties, chemical compositions and antioxidant activities of the walnut oils extracted by the extraction methods mentioned above were determined. In addition, the antioxidant evaluation model of walnut oil was established through multiple linear regression analysis to analyze the key chemical components, affecting the antioxidant activity of walnut oil. The results showed that the three extraction methods had little effect on the content and compositions of fatty acids and glycerides in walnut oil, but had great influences on the contents of total phenols and flavonoids, physicochemical properties and antioxidant activities of the oils. According to the antioxidant evaluation model of walnut oil, linoleic acid and total phenols were the key chemical components affecting the antioxidant activity of walnut oil. In conclusion, among the three extraction methods, the quality of walnut oil extracted by cold pressing method is the best, followed by that obtained by aqueous enzyme method. However, the yield of walnut oil extracted by aqueous enzyme method was higher than that by cold pressing method. More importantly, aqueous enzyme method can simultaneously produce bioactive peptides during the process of oil extraction, so it is a extraction method with great potential for application. [ABSTRACT FROM AUTHOR]

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To explore the clinical application characteristics and compatibility law of Cinna­momum cassia Presl. Collect the medical records of using Cinnamomum cassia Presl in the first diagnosis or the first use in return visit inspection in the "Chinese modern Chinese medi­cine doctor caseessence(onetosix)". The medicalrecords wasenteredintoExceltableland the database was established. SPSS Statistics 23. 0 was used to analyze the frequency of drug use?factor analysis and cluster analysis. SPSS Modelr 14. 1 was used to analyze association rules. A total of 222 casesmet the standard，and 55. 41 % of cases used Presl in the range of 1 〜5 g specified in Pharmacopoeia of People's Republic of China(2015). Frequency analysis showed that Cinaamomum cassia Presl tends to be used in combination with the other drugs，such as tonifying deficiency ? other warming drugs and damp-clearing drugs?and was good at treating kidney diseases. Fifteen core combinations containing Cinna­momum cassia Presl were obtained by association rule analysis. Ten common factors were ex­tracted by high frequency drug factor analysis. Seven classifications are obtained by cluster a­nalysis. The research deepened the understanding of C Presl's clinical medication law through analysis the prescriptions from modern medical medical cases. Refleeted the clinical application characteristics compatibility law of Cinnamomum cassia Presl，and provided the basis for its better clinical application in the future. [ABSTRACT FROM AUTHOR]