DIFFERENCES IN SOME PROPERTIES OF COMMERCIAL AND HOMEMADE TOMATO PASTES

Abstract

This study is designed to indicate some properties and concentration of some heavy metals in four types of canned tomato paste product (TP) with two types of homemade (HM). The canned tomato paste were purchased from the local market in Sulaimani, Kurdistan-Iraq, during 2021-2022. The highest of pH, moisture %, and Lycopene mg/kg were obtained from HM1 (4.94, 77.6 %, 280.983 mg/kg), and the lowest were obtained from TP4 (2.84) for pH, TP2 (66.02 %) for moisture, and TP3 (105.248 mg/kg) for lycopene. Moreover, the maximum of Brix and T. sugar % were obtained from TP1 (28.9 and 3.733 %), and the minimum Brix was recorded from HM1 (18.30), minimum T. Sugar % (1.433 %) from HM2. In addition, the T. acidity % and T.S % ranged between (1.963 – 2.66 %), (22.4 – 33.2 %). The heavy metals in tomato paste were indicated by using (Inductive couple plasma optical spectrometry ICP). The results obtained from this study were compared to the FAO/WHO and CODIX, 2009 standard limit levels. The HM1 was recorded the highest concentration of Fe, Zn, Pb, Ni, Cu, and Cr (59.34, 79.76, 0.169, 9.913, 23.646, and 2.437 mg/kg), and the concentration of Fe, Zn, Ni, Cu, Mn, Cr were above the level limits. Also, the highest concentration of Mn, Cd, Se, As, and Sn ranged between (12.06 – 8.86 mg/kg), (0.89 – 0.046 mg/kg), (0.077 – 0.048 mg/kg), (0.0.96 – 0.011 mg/kg), and (0.132 – 0.085 mg/kg)....

Keywords

• tomato paste,,
• ,،؛homemade tomato paste,,
• ,،؛lycopene