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1) The document compares the yield and anti-stress activity of extracts from Ashwagandha (Withania somnifera) extracted using two methods: hot continuous percolation and maceration. 2) The highest yield of 16.96% w/w was found using maceration with water at a 1:8 drug-solvent ratio. 3) Testing of extract activity using a Plus-Maze model found significant anti-stress results for the water extract and 1:8 hydroalcoholic extract prepared by maceration, and the 1:8 hydroalcoholic extract prepared by soxhlet extraction.
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This study comprehensively analyzed the major chemical constituents of Aloe vera leaves and commercial aloe juice powders. Fresh A. vera leaves from China and Mexico as well as powders from different manufacturers were tested. The major constituents of fresh leaves were found to be fibers, proteins, organic acids, minerals, monosaccharides, and polysaccharides. In commercial powders, the four major components were organic acids, minerals, monosaccharides, and polysaccharides. Manufacturing processes like ethanol precipitation affected constituent levels like fibers and proteins. The study provides a detailed analysis of A. vera composition across product forms.
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