Phytochemical screening, Total Phenolic and Flavonoid content of Jupiter variety leaves extract and their antioxidant and insecticidal activity

Abstract

Grapes are one of the most widely grown fruit around the world but is not for tropical climates area. However, currently in Malaysia the grapes planting become more popular due to the successful production from the local farmers. Due to this situation, the researchers start to focus on the product development from the grapes. This research is to screen the phytochemical compound of grapes leaves extract from Jupiter variety and their antioxidant and insecticidal activity. The DPPH test method was used to determine the antioxidant level. Folin-Ciocalteau assay and aluminium chloride colorimetric assay were used to assess total phenolic and flavonoid content, respectively. The phytochemical was also screened to determine the compound presented in extract. Then, the extract was tested on the Sitophilus oryzae to examine the insecticidal activity in stored rice. The result showed that extract of has a good potential in order to control Sitophilus oryzae and has a high amount of antioxidant. The various compounds presented in the extract that led to the high insecticidal activity. Thus, this result is very significant to help the rice producer in order to control the beetles in rice storage without reducing the quality of rice.