Analysis of Gelatin on Soft Candy using a Combination of Fourier Transform Infrared Spectroscopy (FTIR) with Chemometrics for Halal Authentication


Nina Salamah(1*), Sayyidah Luthfiyah Jufri(2), Hari Susanti(3), Irwandi Jaswir(4)

(1) Universitas Ahmad Dahlan & Ahmad Dahlan Halal Center, Indonesia
(2) Ahmad Dahlan Halal Center, Indonesia
(3) Universitas Ahmad Dahlan, Indonesia
(4) International Institute for Halal Research and Training (INHART), International Islamic University of Malaysia (IIUM), Malaysia
(*) Corresponding Author

Abstract


The main ingredients of soft candies are gelatin made from the skin/bones of cows and pigs, i.e. bovine and porcine gelatin. This research aims to analyze the present bovine and porcine gelatin in soft candy using a fast and low-cost method. The method used is a combination of FTIR and chemometrics. The reference candy samples were made with formulation porcine gelatin concentrations of 15, 30, 45, 60, 75, 90 and 100%. As a control, we used a bovine gelatin reference candy. All the candy samples were measured with FTIR in the reflection mode in the wavenumber range from 4000 to 500 cm-1. Data analysis was carried out using the chemometric method with the Minitab 18 application. PLS calibration results in y = 0, 99999x + 0.000396 indicate a good correlation. The value of R2 = 0.99999 and the RMSEC of 0.03%. Internal validation with R2 = 0.9999 and RMSECV = 3.69% and external validation with R2 = 0.9994 with RMSEP = 1.28%. The PCA results show different quadrant classifications of bovine and porcine gelatin. Also, there are similarities between the market candy quadrant, bovine gelatin, and porcine gelatin. The fast method and low cost involved simple sample preparation, which were developed to detect and classify the presence of bovine and porcine gelatin in soft candy using FTIR and chemometrics.

Keywords


chemometric; FTIR; gelatin; soft candy

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DOI: https://doi.org/10.15575/ijhar.v5i2.25682

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