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ISOLATION OF AN ANTI-FATIGUE PREPARATION FROM CELLULASE-TREATED MACA BY HYDROALCOHOLIC EXTRACTION

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Author: Yue Zheng, Wen-Cheng Zhang, Ze-Yu Wu, Chuan-Xiang Fu, Han Gao, Ai-Ling Hui, Biao Du and Hua-Wei Zhang

Abstract: The purpose of this study was to evaluate the anti-fatigue activity of maca hydroalcoholic extract (ME), which mainly contains macamides and polysaccharides. ME was prepared by circumfluence extraction with enzymatic pre-treatment. Anti-fatigue activity of ME was investigated in weight-loaded forced swimming mice, with pure macamides and commercially available maca tablet as positive control. Compared with normal group, pure macamides treatment group could prolong the swimming time to exhaustion, but there was no statistically significant difference (P > 0.05); while ME (middle-dose and high-dose groups) could effectively prolong the swimming durations (P < 0.05). Supplementation with pure macamides significantly decreased blood lactic acid (BLA), whereas ME significantly increased hepatic glycogen (HG), decreased BLA, and blood urea nitrogen (BUN) compared with those in normal control (P < 0.05). The results suggested that the anti-fatigue effect of ME was better than that of pure macamides, which can be explained by the increase of glycogen storage and the reduction of metabolites accumulation.

Keywords: Anti-fatigue, Enzymatic pre-treatment, Macamides, Maca hydroalcoholic extract, Maca polysaccharides

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