Abstract
This study explores the potential of Curcuma longa byproducts, called Curcuminoid removed turmeric oleoresin (CRTO), to extend the shelf life of peanut butter. CRTO, rich in curcuminoids, was added to peanut butter formulations to assess its preservative effects, flavour impact, and nutritional benefits. Results demonstrated that CRTO oil and curcuminoids effectively prolonged peanut butter shelf life by delaying rancidity. The study also compared results using oxygen scavenger film (OSF) packaging. Over time, water activity and oil separation increased, but CRTO oil and OSF helped to mitigate these effects. Sensory evaluations favored CRTO oil and curcuminoids, while microbial analysis confirmed safety of both the control and OSF samples for six months at 27 °C and 65% RH, and for four months at 37 °C and 95% RH. This study proposes a natural and sustainable method for extending peanut butter shelf life while enriching it with curcuminoids, with significant implications for the food industry.
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