What is it about?
This study explores how proteins from IPB-D1 chicken meat, an improved Indonesian local chicken breed, can be transformed into smaller peptides with potential health benefits. Rather than using chicken meat only as a source of dietary protein, we investigated whether its water-soluble muscle proteins could be used to produce natural antioxidant and antibacterial compounds. We used an enzyme called chymotrypsin to break down the proteins into smaller pieces. The resulting peptides were then separated using a filtration membrane to obtain molecules smaller than or equal to 3 kDa. We tested their ability to neutralize free radicals and inhibit the growth of four bacteria: Escherichia coli, Salmonella typhi, Staphylococcus aureus, and Bacillus cereus. The results showed that the hydrolyzed peptides had measurable antioxidant activity, with 24.44% free-radical inhibition. They also demonstrated improved antibacterial activity against all four tested bacteria compared with the untreated proteins. The most notable inhibition was observed against Salmonella typhi. These findings suggest that IPB-D1 chicken meat has potential beyond conventional food consumption and could become a source of bioactive peptides for future functional food and nutraceutical development.
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Why is it important?
This research is important because it introduces a new potential application for IPB-D1 chicken, an improved Indonesian local chicken breed. While chicken meat is commonly valued for its nutritional content, this study demonstrates that its sarcoplasmic proteins can also be used to produce peptides with both antioxidant and antibacterial properties. The novelty lies in the combination of IPB-D1 chicken sarcoplasmic proteins and the enzyme chymotrypsin, which has not previously been specifically investigated for producing peptides with these dual biological activities. We also identified an effective hydrolysis condition using 5 U/mL chymotrypsin for 6 hours, achieving the highest degree of hydrolysis (17.93%). This finding is relevant as the demand for natural bioactive ingredients continues to grow, particularly in the search for alternatives to synthetic antioxidants and antibacterial agents. It also provides an opportunity to increase the value of locally developed Indonesian chicken breeds by exploring their potential in functional food and nutraceutical applications. Although further research is needed to identify individual peptides, evaluate their safety, and validate their effects in living systems, this study provides an important starting point for developing value-added products from local poultry resources.
Perspectives
As a researcher, I find this study meaningful because it allowed me to explore the potential of an Indonesian improved local chicken breed beyond its conventional use as a meat source. Working with IPB-D1 chicken proteins gave me an opportunity to understand how enzymatic hydrolysis can transform ordinary muscle proteins into smaller peptides with valuable biological activities. One of the most interesting findings was that the untreated proteins did not show detectable antioxidant activity, while the hydrolyzed peptides demonstrated measurable antioxidant and improved antibacterial activities. This highlights how processing methods can influence the functional properties of food-derived proteins. I believe this research is a small but meaningful contribution to the development of functional food ingredients from local animal resources. It also encourages further exploration of Indonesian chicken breeds, which may have untapped potential in food science and biotechnology. I hope these findings will inspire future studies to identify specific bioactive peptides, investigate their mechanisms of action, and evaluate their effectiveness and safety through more advanced biological testing. Ultimately, I hope this research can contribute to the sustainable utilization and greater recognition of Indonesia's local poultry genetic resources.
Zakiah Wulandari
Read the Original
This page is a summary of: Potent Antioxidant and Antibacterial Activities of ≤3 kDa Hydrolyzed Sarcoplasmic Proteins from IPB-D1 Chicken, Protein & Peptide Letters, January 2026, Bentham Science Publishers,
DOI: 10.2174/0109298665430612260207170942.
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