A study on microbial and chemical characterization of mechanically deboned chicken in Tehran, Iran.

This study aimed to investigate microbial, chemical, and heavy metal contamination of mechanically deboned chicken (MDC) in Iran. A total of 24 samples of MDC were obtained from meat plants. TBC of the three samples were acceptable. E. coli and S. aureus were detected in 21 and 6 samples, respectively. Three of the samples were contaminated with Salmonella spp. Campylobacter was not detected in any of the samples. The moisture content of MDC was in the range of 41% to 75%. Ash had a range of 0.74% to 1.4%. The maximum protein content of the MDC was 21.98% and fat content was in the range of 2.1% to 20%. The highest PV was 15.18 mEq/kg. All of the samples were polluted with Pb, Cd, and As. In conclusion, MDC had microbial and chemical contamination. It is necessary to develop more strict criteria for control of the chicken paste processing method.

The effect of banana leaf package on the shelf life of rainbow trout fillet in comparison with plastic bag s / O efeito da embalagem de folha de bananeira na vida de prateleira do filé de truta arco-íris em comparação com sacos de plástico

The aim of this study was to evaluate the effect of banana leaf extract on the quality and shelf life of rainbow trout compared to plastic bags at freezing temperature for 40 days. For evaluating this propose, the antioxidant activity of banana leaf extract was assessed. In addition, the shelf life of fish filets was determined by measuring thiobarbituric acid (TBA) and pHof fish. The banana leaves extract showed the highest content of vitamin E (5.8 ± 0.61 mg /g) and carotenoids (12.8 ± 0.1 mg /g). The potential of Cu (II) reduction the extract was 1.76 ± 0.09. The magnitude of modification in TBA and pH of the packed fish with banana leaves were less than the control samples. The present study demonstrated that the use of banana leaf extract will retard lipid oxidation in fish. fillet during freezing storage that may due to its strong antioxidant properties.

O objetivo deste estudo foi avaliar o efeito do extrato de folhas de bananeira sobre a qualidade e vida de prateleira da truta arco-íris comparada a sacolas plásticas na temperatura de congelamento por 40 dias. Para avaliar essa proposta, foi determinada a atividade antioxidante do extrato de folhas de bananeira. Além disso, a vida de prateleira dos filés de peixe foi determinada medindo o ácido tiobarbitúrico (TBA) e o pH do peixe. O extrato de folhas de bananeira apresentou o maior teor de vitamina E (5,8 ± 0,61 mg/g) e carotenóides (12,8 ± 0,1 mg/g). O potencial de redução de Cu (II) no extrato foi de 1,76 ± 0,09. A magnitude da modificação no TBA e pH do peixe embalado com folhas de bananeira foi menor que as amostras controle. O presente estudo demonstrou que o uso de extrato de folhas de bananeira é capaz de retardar a oxidação lipídica no filé de peixe durante o armazenamento de congelamento, devido às suas fortes propriedades antioxidantes.