Optimization of Total Phenolic from Euphoria longana Lam. Seed by Microwave Assisted Extraction

Authors

  • Kanjana Narkprasom Faculty of Engineering and Agro-Industry, Maejo University
  • Yardfon Tanongkankit Faculty of Engineering and Agro-Industry, Maejo University
  • Phanat Saenscharoenrat Faculty of Engineering and Agro-Industry, Maejo University
  • Nukrob Narkprasom Faculty of Engineering and Agro-Industry, Maejo University

Abstract

Longan (Euphoria longana Lam) is economic fruit of northern Thailand which the seed of it is a waste of industry of longan in syrup. The seeds of longan found the phenolic compound which it has pharmaceutical properties as antioxidant, anti-carcinogenic, anti-mutagenic. The 15 runs, Box-Behken Design by response surface method was used to determine the optimization of total phenolic from longan seeds by microwave-assisted extraction. Factors of ethanol proportion (40-60 %v/v), microwave power (450-700 W), and extraction time (180-240 second) were studied. The statistical analysis indicated that polynomial equation was selected to predict the optimization of total phenolic from longan seeds by microwave-assisted extraction. The highest yield of total phenolic from longan seeds (64.952±0.556 mgGAE/gDW) was found at 50 %v/v of ethanol proportion, 700 W of microwave power and 211 second of extraction time. This study contributes to increase the value of agricultural waste of longan to be used as ingredients for the development of cosmetics and functional foods.   Keywords :  Euphoria longana Lam, phenolic, microwave assisted extraction, response surface method

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Published

2019-01-10