Efficacy of Tomato Powder as Antioxidant in Cooked Pork Patties

• Main Authors: I. S. Kim, S. K. Jin, M. R. Yang, G. M. Chu, J. H. Park, R. H. I. Rashid, J. Y. Kim, S. N. Kang
• Format: Article
• Language: English
• Published: Asian-Australasian Association of Animal Production Societies 2013-09-01
• Series: Asian-Australasian Journal of Animal Sciences
• Subjects: Tomato Powder; Natural Antioxidant; Pork Patties; Antioxidant Activity; Sensory Evaluation
• Online Access: http://www.ajas.info/upload/pdf/ajas-26-9-1339-16.pdf

This study was carried out to determine the effects of tomato powder (TP) on cooked pork patties during storage at 10±1°C in the dark. The total phenolic and flavonoid contents of TP extract were 26.22 mg gallic acid/100 g and 3.52 mg quercetin/100 g, respectively. The extract of TP showed a potential antioxidant activity in the DPPH radical-scavenging assay (EC50 = 16.76 μg/mL). Pork patties were manufactured with 0.25% (T1), 0.5% (T2), 0.75% (T3) and 1.0% (T4) TP in a basic formula (C). The pH and volatile basic nitrogen (VBN) values of T2, T3 and T4 patties were lower (p<0.05) than the C patties during storage. Increased concentration of TP in meat patties decreased (p<0.05) the 2-thiobarbituric acid reactive substances (TBARS) and total plate count (TPC) values at d 7 of storage. Tomato treated-patties had lower (p<0.05) values for lightness (L*), but higher (p<0.05) values for redness (a*) and yellowness (b*) at d 3 and 7 of storage compared with the C. In the case of sensory evaluation, the scores of colour, flavour and overall acceptability of T3 and T4 patties were higher (p<0.05) than those of the C patty after 3 or 7 days of storage.