Zingiber Mill. is one of the most diverse genera in Vietnam with 36 recorded species, many of which have been used as traditional medicine to treat several ailments. Reports of studies on Z. nudicarpum D. Fang are relatively scarce. This study aimed to determine the microscopic characteristics, total phenolic content and antioxidant activity of Z. nudicarpum.

Avocado peel has been considered as a potential source of natural antioxidants in which phenolics are among the most important compounds. Therefore, this study aims to optimize the extraction process of phenolics using response surface methodology and evaluate the corresponding antioxidant activity.

Keeping in view the potential of probiotics and antioxidative properties of herbs, the present study was endeavoured to develop antioxidant-rich herbal lassi using carrot, ginger, and turmeric extract and assess the antioxidant activity of the developed lassi.