RESUMO
Ginger extract has been reported to possess antioxidant properties. However, components isolated from ginger have been rarely reported to inhibit oxidation. Herein, the antioxidant properties of ginger and purified components derived from it (6-gingerol, zingerone, rutin, quercetin, and kaempferol) were confirmed by using HPLC and were further used to investigate its effect on lamb meat. Myofibrillar proteins isolated (MPI) from lamb meat were incubated with ginger and its constituents under induced Fenton oxidation (1.0 mmol/L FeCl3, 0.1 mmol/L Asc, and 20 mmol/L H2O2) for 1, 3,5, and 7 h. Incubating meat protein isolate in the absence of ginger extract or its components resulted in a substantial drop in sulfhydryl groups, an increase in protein carbonyl content, and a corresponding increase in TBARS content. However, ginger extract and its constituents demonstrated antioxidant properties, which might be attributed to their hydroxyl groups and suitable solubilizing side chains. Overall, ginger extract exhibited the highest antioxidant capabilities of all treated samples, suggesting that ginger extracts may be used as a natural antioxidant in meat and lipid/protein-containing processed products. SIGNIFICANCE OF THE STUDY: Ginger extract is also frequently used as a herbal medicine due to its anti-inflammatory, anti-cancer, and antibacterial qualities. Nonvolatile pungent chemicals found in ginger, such as gingerol, shogaols, paradols, and zingerone, as well as kaempferol, rutin, and other phenolic compounds, have been confirmed in ginger extract and have been shown to have antioxidant action driven by free radical elimination. Despite these findings, ginger extract and its pure constituent components have seldom been shown to have the ability to slow protein and lipid oxidation in meat and meat-related products. The effect of ginger extracts on the oxidative stability of myofibriller protein isolate has never been investigated. Exploiting the phenolic content of ginger extract may result in a discovery that would have a huge influence on both the ginger and meat industries as well as other food processing sectors. The first aim of our study was to confirm the presence of six selected phenolic compounds (rutin, kaempferol, 6-gingerol, zingerone, naringenin, and quercetin) in ginger as reported by literature, and the second objective was to determine the efficacy of ginger extracts and its purified constituents on myofibrillar protein isolate treated under induced Fenton oxidation.
Assuntos
Quempferóis , Zingiber officinale , Animais , Antibacterianos , Anti-Inflamatórios/química , Antioxidantes/metabolismo , Antioxidantes/farmacologia , Catecóis , Álcoois Graxos/química , Álcoois Graxos/farmacologia , Zingiber officinale/química , Zingiber officinale/metabolismo , Guaiacol/análogos & derivados , Peróxido de Hidrogênio/metabolismo , Proteínas de Carne , Fenóis , Extratos Vegetais/química , Extratos Vegetais/farmacologia , Carbonilação Proteica , Quercetina , Rutina , Ovinos , Substâncias Reativas com Ácido TiobarbitúricoRESUMO
The controversy around synthetic antioxidants and antimicrobials, which have been linked to major health problems, has driven both consumers and producers toward the usage of natural preservatives. Plants are excellent sources of bioactive compounds that can be used as part of raw materials during meat processing. Therefore, exploitation of plant-derived antioxidants is necessary to protect against microbial growth and to extend the self-life of meat. However, certain limitations, such as a strong organoleptic effect owing to the bitterness and acerbic taste, instability, and short shelf life of some plant bioactive compounds, limit their use in the meat system. Encapsulation is a novel and promising technique for overcoming these limitations. It protects bioactive compounds by strengthening their oxidative stability and by controlling the release of targeted compounds. Indeed, this review article provides recent advancements in the encapsulation of plant-derived compounds and their specific application in meat preservation.