Khuriyati, Nafis, et al. “Determination of Total Carotene and Vitamin C in Chili Powder (Capsicum Annuum L.) Non-Destructively Using Near-Infrared Spectroscopy”. International Journal on Advanced Science, Engineering and Information Technology, vol. 13, no. 1, Feb. 2023, pp. 69-76, doi:10.18517/ijaseit.13.1.16800.