Wu, She-Ching Antioxidant properties of Lactobacillus-fermented and non-fermented Graptopetalum paraguayense E. Walther at different stages of maturity. [electronic resource] - Food chemistry Dec 2011 - 804-9 p. digital Publication Type: Journal Article ISSN: 0308-8146 Standard No.: 10.1016/j.foodchem.2011.05.025 doi