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Valand, R., et al., A review of Fourier Transform Infrared (FTIR) spectroscopy used in food adulteration and authenticity investigations, Food Additives & Contaminants: Part A, 37 (1), 19-38, 2020.

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Article

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

1Research Center for Appropriate Technology, Indonesian Institute of Sciences (P2TTG-LIPI), Jl. K.S. Tubun No. 5 Subang 41213, West Java, Indonesia 41213.

2Department of Food Technology, Pasundan University, Jl. Dr. Setiabudhi No.193, Gegerkalong, Sukasari, Kota Bandung, West Java, Indonesia 40153


Journal of Food and Nutrition Research. 2021, Vol. 9 No. 6, 297-303
DOI: 10.12691/jfnr-9-6-5
Copyright © 2021 Science and Education Publishing

Cite this paper:
Achmat Sarifudin, Enny Sholichah, Woro Setiaboma, Riyanti Ekafitri, Nok Afifah, Lia Ratnawati, Eko Ari Pudiyanto, Nana Sutisna Achyadi. Adulterated Powdered White Pepper Products by Tapioca Flour Sold in Indonesian’s Online Market Investigated by Simple FTIR Analytical Method. Journal of Food and Nutrition Research. 2021; 9(6):297-303. doi: 10.12691/jfnr-9-6-5.

Correspondence to: Achmat  Sarifudin, Research Center for Appropriate Technology, Indonesian Institute of Sciences (P2TTG-LIPI), Jl. K.S. Tubun No. 5 Subang 41213, West Java, Indonesia 41213.. Email: achmatsarifudin@gmail.com

Abstract

Powdered pepper is very susceptible to be adulterated by flour. Adulteration of online-marketed powdered pepper product by tapioca flour was investigated by employing the FTIR technique. Powdered pepper products sold in five online market of Indonesia were surveyed then the FTIR spectra of some pepper products representing different pepper product categories were examined. By using the linear correlation between the concentration of powdered pepper and the normalized absorbance intensity of FTIR then the relative purity of powdered pepper products was determined. Result showed that out of 15 pepper products, 3 powdered pepper products (sample C, D and M) were confirmed being added by other ingredients, however, they cannot be classified being adulterated since their label says that they contain ingredients other than pepper. One product (sample K) in the category of powdered pepper products having brand and their label says that it is made of ground pepper was suspected being adulterated in which its relative purity was 67.3%. Based on this result, FTIR can be used as a fast and reliable analytical method to detect adulteration of powdered pepper product by tapioca flour.

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