Abstract
Oxidation is the main cause of quality deterioration in meat-based foods, such as burgers. Antioxidants inhibit the oxidation process; recently, natural antioxidants have gained interest, due to safety concerns. In this study, the effects of leaf powder and crude extracts of both Moringa oleifera and olive in chicken burgers were studied for their antioxidant potential in preventing fat oxidation during storage. Antioxidant activities were evaluated using DPPH (2,2-diphenyl-1-picrylhydrazyl). The results showed the highest DPPH radical scavenging with IC50 values of 2.397 ± 0.10 mg/mL in the Moringa leaf. Total phenolic content (TPC) was crude olive extract > crude Moringa extract > olive leaf > Moringa leaf. The total flavonoid content (TFC) was significantly higher in the olive leaf and its crude extract than in the Moringa leaf and its crude extract. The pH, total volatile nitrogen, and sensory properties were affected by the addition of olive and Moringa (leaf and crude extracts) to chicken burgers refrigerated for 20 days. The addition of Moringa and olive leaf powder decreased lipid oxidation and PV after 10 days of storage. In general, Moringa and olive leaf treatments slowed the deterioration of meat, suggesting their use as preservatives to extend the shelf-life of chicken burgers.
Highlights
IntroductionThe global production of white meat products, especially poultry meat, has increased because of its sensory (e.g., color, odor, flavor, and texture) attributes, and the consumer belief that white meat is healthier than red meat
The global production of white meat products, especially poultry meat, has increased because of its sensory attributes, and the consumer belief that white meat is healthier than red meat
It is well recognized that chemicals formed from lipid oxidation play a key role in the production of the characteristic aromas associated with meat products, which are highly valued by consumers [5]
Summary
The global production of white meat products, especially poultry meat, has increased because of its sensory (e.g., color, odor, flavor, and texture) attributes, and the consumer belief that white meat is healthier than red meat. One of the main goals of meat manufacturers is to provide consumers with fresh food in terms of color, flavor, and odor. Fat oxidation is the most important factor affecting the quality of meat. It can help develop pleasant aromas in some circumstances such as processing, handling, and storage [4]. It is well recognized that chemicals formed from lipid oxidation play a key role in the production of the characteristic aromas associated with meat products, which are highly valued by consumers [5]. Autoxidation, which is a continuous free radical chain reaction, is the predominant process-causing lipid oxidation in meat [5]
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