Stability of Phytochemicals and Antioxidant Properties in Ginger (Zingiber officinaleRoscoe) Rhizome with Different Drying Methods

2011 ◽  
Vol 17 (4) ◽  
pp. 361-374 ◽  
Author(s):  
Theeraphan Chumroenphat ◽  
Intha Khanprom ◽  
Luchai Butkhup
Keyword(s):  
Antioxidant Properties ◽  
Drying Methods

Effect of drying methods on physico-chemical and antioxidant properties of date fibre concentrates

2011 ◽  
Vol 125 (4) ◽  
pp. 1194-1201 ◽  
Author(s):  
Chema Borchani ◽  
Souhail Besbes ◽  
Manel Masmoudi ◽  
Christophe Blecker ◽  
Michel Paquot ◽  
...  
Keyword(s):  
Antioxidant Properties ◽  
Drying Methods ◽  
Physico Chemical

scholarly journals Studies on drying characteristic, nutritional composition, and antioxidant properties of Stevia rebaudiana (Bertoni) leaves

2015 ◽  
Vol 29 (3) ◽  
pp. 323-331 ◽  
Author(s):  
Yolanda B. Moguel-Ordóñez ◽  
Diana L. Cabrera-Amaro ◽  
Maira R. Segura-Campos ◽  
Jorge C. Ruiz-Ruiz
Keyword(s):  
Antioxidant Properties ◽  
Reducing Power ◽  
Stevia Rebaudiana ◽  
Biological Properties ◽  
Nutritional Composition ◽  
Antioxidant Compounds ◽  
Drying Methods ◽  
Stevia Rebaudiana Bertoni ◽  
Trolox Equivalent ◽  
Drying Treatment

Abstract Drying characteristics of Stevia rebaudiana (Bertoni) leaves using radiation drying, convection drying, sun drying, and shade drying treatments were investigated in a convective type. Results for all treatments indicated that drying took place in the falling rate period. The chroma of the dried samples ranged between 29.66 and 23.85. Convection and shade drying samples were found better in colour and had the highest content of total pigments. The proximate and fibre composition were affected by the drying treatments. Extracts obtained from convection drying and shade drying leaves exhibited higher values of Trolox equivalent antioxidant capacities 416.89-423.64 mM mg−1 and ferric reducing power 85.19-87.97%. These extracts also showed ion chelating capacity 59.05-60.21% for Cu+2 and 55.05-59.11% for Fe+2. The results indicate that it is possible to select the drying treatment to obtain the best nutritional and biological properties. Convection drying and shade drying were the least aggressive treatments and leaf powders obtained by these drying methods could be used as sources of nutrients, fibre, and antioxidant compounds.

scholarly journals Effect of Extraction Solvents and Drying Methods on the Physicochemical and Antioxidant Properties of Helicteres hirsuta Lour. Leaves

Technologies ◽  
2015 ◽  
Vol 3 (4) ◽  
pp. 285-301 ◽  
Author(s):  
Hong Pham ◽  
Van Nguyen ◽  
Quan Vuong ◽  
Michael Bowyer ◽  
Christopher Scarlett
Keyword(s):  
Antioxidant Properties ◽  
Drying Methods ◽  
Extraction Solvents

scholarly journals The effect of different drying methods on chemical composition and antioxidant properties of methanolic extract of olive leaf

2020 ◽  
Vol 16 (97) ◽  
pp. 149-159
Author(s):  
Leila Haghjoo ◽  
Hassan Barzegar ◽  
Hossein Jooyandeh ◽  
◽  
◽  
...  
Keyword(s):  
Chemical Composition ◽  
Methanolic Extract ◽  
Antioxidant Properties ◽  
Drying Methods ◽  
Olive Leaf

scholarly journals Combined effects of sodium carbonate pretreatment and hybrid drying methods on the nutritional and antioxidant properties of dried Goji berries

2018 ◽  
Author(s):  
Qinqin Chen ◽  
Huihui Song ◽  
Jinfeng Bi ◽  
Mo Zhou ◽  
Xinye Wu ◽  
...  
Keyword(s):  
Pressure Drop ◽  
Sodium Carbonate ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Drying Methods ◽  
Combined Effects ◽  
Lycium Barbarum ◽  
Drop Drying ◽  
Goji Berries ◽  
Instant Controlled Pressure Drop

Combined effects of sodium carbonate (SC) pretreatment and hybrid drying methods (freeze drying-instant controlled pressure drop drying (FD-ICPDD), hot air drying (HAD-ICPDD) on nutritional and antioxidant properties of Goji berries were investigated. Compared with distilled water pretreatment, SC pretreatment could obtain products with better quality. Goji dried by FD-ICPDD showed better overall quality than that dried by HAD or FD alone. FD-ICPDD products exhibited higher contents of total Lycium barbarum polysaccharide (140 g/kg), total carotenoids (2.4 g/kg) as well as the strongest ABTS.+ radical scavenging activity (57.6 μmol TE/g). FD-ICPDD could be an alternative drying method for processing valuable agro-products. Keywords: sodium carbonate, instant controlled pressure drop drying, nutritional properties, antioxidant activity

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