Chemometric studies on mineral distribution and microstructure analysis of freeze-dried Aloe vera L. gel at different harvesting regimens

Chemometric studies (principal component and cluster analysis) on mineral distribution of freeze-dried Aloe vera L. gel at different harvesting regimens. Freeze-dried gel from 2, 3 and 4-year-old plants during summer was assigned as S2, S3 and S4 respectively. R3 and W3 represent the freeze-dried gel from 3-year-old plants at rainy and winter season, respectively.