Table 4. Relative purity of powdered pepper products from Tokopedia online market from certain categories calculated based on FTIR data from some selected wavenumbers

From

Adulterated Powdered White Pepper Products by Tapioca Flour Sold in Indonesian’s Online Market Investigated by Simple FTIR Analytical Method

Achmat Sarifudin, Enny Sholichah, Woro Setiaboma, Riyanti Ekafitri, Nok Afifah, Lia Ratnawati, Eko Ari Pudiyanto, Nana Sutisna Achyadi

Journal of Food and Nutrition Research. 2021, 9(6), 297-303 doi:10.12691/jfnr-9-6-5