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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
  • Table 1. The studied pepper products from Tokopedia online market
  • Table 2. Powdered pepper products in online market of Indonesia*
  • Table 3. Linear correlation between concentration of powdered pepper (X) and normalized absorbance intensity (Y) of FTIR spectra at certain wavenumber
  • Table 4. Relative purity of powdered pepper products from Tokopedia online market from certain categories calculated based on FTIR data from some selected wavenumbers