“Silky Blue” antioxidant-rich collagen drink: An innovation from butterfly pea flower extract (Clitoria ternatea L.) as anti-aging nutritional supplement

The problem of premature aging often arises among adults. Collagen and antioxidants are compounds believed to be effective in addressing this issue. One of the plants that contains strong antioxidants is the butterfly pea flower. The purpose of this research is to determine the antioxidant capacity of collagen drink from the butterfly pea flower and to know the antibacterial activity of butterfly pea flower extract on Salmonella typhi bacteria. To test the antioxidant capacity of this research is to use the DPPH method is used, namely by measuring the antioxidant percentage of the sample against DPPH free radicals. The results of this study were obtained from the equation y = bx + a, and the IC₅₀ value was calculated from the obtained results. Based on the results of the antioxidant activity test, a linear regression equation was obtained, namely y = 0.1087x + 43.722, with R² = 0.9849, which indicates that the sample extract has a strong antioxidant activity with an IC₅₀ value of 57.755 ppm. With categories <50 is very strong, 50-100 is strong, 101-150 is moderate, and >150 is weak. Thus, it can be seen that the value of the sample is included in the category with strong antioxidant activity. Besides antioxidant testing, an antibacterial test was also conducted in this research. Antibacterial activity of Clitoria ternatea L. extract against Salmonella typhi gives the result of an inhibition zone of 20 mm, which is categorized as a powerful antibacterial agent. The conclusion is that collagen drink from butterfly pea flower extract has a strong antioxidant activity and antibacterial activity, so it can be used as a skin care product to prevent premature aging.