Effects of Different Drying Methods and Extraction Condition on Antioxidant Properties of Shiitake (Lentinus edodes)

Abstract

This work studies the effect of four drying methods, microwave-, oven-, freeze-and sun-drying on the parameters of antioxidant properties for Shiitake (Lentinus edodes): total phenolic content, total antioxidant capacity and DPPH scavenging activity. Freeze-drying Shiitake showed the highest activities in above three parameters. In addition, the optimum extraction condition (90℃, 40% ethanol and 1 h) of Shiitake was determined with orthogonal array design matrix using the total phenolic content as an indication. The results may be an economically interesting phytochemical source for the nutraceutical and functional food market.

Effects of Freeze-Drying Process on Antioxidant and Some Physical Properties of Cherry Laurel and Kiwi Fruits

“…Another study about drying methods of mushroom indicated that freeze-drying of mushroom showed higher DPPH values than fresh ones. Freeze-drying, which formed ice crystals and rupture cell structure, increases the extraction efficiency and increases the ability of cellular components transportation, and consequently extraction [33]. Similar tendency about antioxidant activity of freeze-dried samples were found in both methods, as a result, we can conclude that freeze-drying is an effective method to preserve antioxidant properties of food materials.…”

Towards an Efficient Protocol for the Determination of Triterpenic Acids in Olive Fruit: A Comparative Study of Drying and Extraction Methods

“…Previous studies have also demonstrated the superiority of freeze-drying compared with common drying methods in the determination of phenolic compounds, saponins, carotenoids and capsaicinoids in diverse plant material (Fuentes-Alventosa et al, 2009;Rios and Gutierrez-Rosales, 2010;Topuz et al, 2011). It is well known that the freeze-drying procedure enhances the extraction efficiency since ice crystals formed within the sample matrix can rupture cell structure, which allows exit of cellular components and access of solvent (Zhang et al, 2009). Overall, freeze-drying is proposed for analytical determination, while the use of frozen olive fruits to recover triterpenic acids at the large scale is also recommended, since freeze-drying is a high-cost procedure.…”

Antioxidant activities of polysaccharides from Lentinus edodes and their significance for disease prevention

“…They possess numerous pharmacology properties as reported by many recent researches, such as antimicrobial, anti-tumor, liver function improving and hypolipidemic activity [9,10]. However, data from studies often focus on the antioxidant capacity of polyphenolic compounds in L. edodes [11,12]. Studies concerning antioxidant capacity of crude water-soluble polysaccharide (WSP) from mushroom mycelia using Trolox equivalent antioxidant capacity (TEAC) assay as measurement are only reported by Wu and Hansen [11].…”