Effects of Continuous Steaming on Mineral Elements of Polygonatum cyrtonema Hua at different ages
Objective To study the effect of continuous steaming on the mineral elements of Polygonatum cyrtonema Hua at dif-ferent ages.Methods K,Ca,P,Mg,Na,Fe and other elements were determined by ICP method,and analyzed and comprehen-sively evaluated by LSD method,correlation analysis and principal component analysis.Results B in the first-age section changed the most,and the coefficient of variation was 54.9％;Fe in the second-age section,third-year section,and mixed-age section all changed the most,with the coefficient of variation:25.8％,24.9％,and 31.7％,respectively;,the second-year-old section and the third-year-old section had the smallest change in Na,the coefficient of variation was 0.4％,and the minimum variation coefficient of B in the mixed-age section was 5.3％;correlation analysis showed that there was a significant positive correlation(P＜0.05)with B with Na;K with Mg,Ca;Ca with Fe,Mn;P with Fe,Zn;Mg with Fe,Mn,Zn;Zn with Fe,Mn;Mn with Fe.There is a very significant positive correlation(P＜0.01)with P and Mn,Mg;Ca and Mg,P.The com-prehensive score shows that the first age section has the highest score after being continuously steamed for 14 hours,and the aver-age comprehensive score of each age section is ranked as mixed age section(0.915)＞first age section(0.146)＞third age section(-0.161)＞second age section(-0.901)).Conclusion The content of mineral elements in different ages of Polygo-natum cyrtonema Hua has changed significantly after continuous steaming.Based on the comprehensive score,it can be prelimina-rily determined that the first age of Polygonatum cyrtonema Hua was harvested and the comprehensive quality of mineral elements was the best after continuous steaming for 14 hours.Each age section is graded:mixed age section is grade 1,first age section is grade 2,third age section is grade 3,and second age section is grade 4.
万方数据
维普
