Home
Resources
Publications
Influence of Drying Method on Steviol Glycosides and Antioxidants in Stevia Rebaudiana Leaves

Influence of Drying Method on Steviol Glycosides and Antioxidants in Stevia Rebaudiana Leaves

Angela Periche, María Luisa Castelló, Ana Heredia, Isabel Escriche

Food Chem. 2015 Apr 1;172:1-6.

PMID: 25442516

Abstract:

The application of different drying conditions (hot air drying at 100 °C and 180 °C, freeze drying and shade drying) on steviol glycosides (stevioside, dulcoside A, rebaudioside A and rebaudioside C) and antioxidants in Stevia leaves was evaluated. Stevioside, the major glycoside found in fresh leaves (81.2mg/g), suffered an important reduction in all cases, although shade drying was the least aggressive treatment. Considering the antioxidant parameters (total phenols, flavonoids and total antioxidants), the most suitable drying method was hot air at 180 °C, since it substantially increased all of them (76.8 mg gallic acid, 45.1mg catechin and 126 mg Trolox, all equivalent/g Stevia, respectively), with respect to those present in fresh leaves (44.4, 2.5 and 52.9 mg equivalent/g). Therefore, the ideal method for drying Stevia leaves depends on their final use (sweetener or antioxidant), although, hot air at 180 °C is the most recommendable if only one treatment has to be chosen.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP64432060	Dulcoside A		64432-06-0	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: