Research Topic: Food Preservation

Isolation and Identification of Aspergillus spp. from Rotted Walnuts and Inhibition Mechanism of Aspergillus flavus via Cinnamon Essential Oil

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Researchers collected rotted walnuts from storage in Shanxi, China and identified five types of Aspergillus fungi contaminating them, with Aspergillus flavus being the most common. They tested cinnamon essential oil as a natural antifungal treatment and found it effectively stopped fungal growth by damaging the fungi’s cell membranes and causing oxidative stress. This research suggests cinnamon essential oil could be used as a safe, natural alternative to chemical fungicides for preserving walnuts and other foods from fungal spoilage.

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Mechanism Analysis of Amphotericin B Controlling Postharvest Gray Mold in Table Grapes

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This research shows that amphotericin B, a natural compound produced by bacteria, can effectively prevent gray mold from spoiling table grapes after harvest. The compound works by damaging the mold’s cell membranes and also activates the grapes’ own defense systems. At a treatment level of 200 mg/L, it completely prevented mold growth on grapes over a three-day storage period, offering a safer, more environmentally friendly alternative to synthetic fungicides.

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Antimicrobial and Antifungal Activities of Proline-Based 2,5-Diketopiperazines Occurring in Food and Beverages and Their Synergism with Lactic Acid

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Researchers synthesized special cyclic peptides called 2,5-diketopiperazines (found naturally in fermented foods like bread and cheese) and tested their ability to kill harmful molds and bacteria. When combined with lactic acid (a natural preservative), these compounds worked extremely well together, achieving nearly complete mold inhibition. This research suggests that using special starter cultures that naturally produce these compounds could help keep food fresh longer without artificial preservatives.

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Effect of Flammulina velutipes polysaccharides on the physicochemical properties of catfish surimi and myofibrillar protein oxidation during frozen storage

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Researchers discovered that mushroom polysaccharides extracted from Flammulina velutipes roots can protect fish surimi (a protein product used in food manufacturing) during frozen storage. When added to surimi at 2% concentration, these natural mushroom extracts prevented protein damage and maintained product quality just as well as traditional chemical preservatives, but without the added sweetness or calories. This finding suggests that mushroom-based compounds could offer a healthier alternative for preserving frozen food products.

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Physicochemical Properties and Volatile Profile of Chito: A Traditional Dry-Cured Goat Meat Product

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Chito is a traditional Mexican goat meat product that comes in two forms: one for immediate eating and one pressed for sale in other regions. Researchers studied these products over three years and found that the pressed version becomes harder, saltier, and develops more of the rancid flavors associated with fat breakdown. Despite these differences, both versions maintain safe bacteria levels through the natural preservation from salt and sun-drying.

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