Preparation and application of cinnamon-Litsea cubeba compound essential oil microcapsules for peanut kernel postharvest storage

This research developed a novel, efficient and safe antimildew for peanut kernel postharvest storage. The antimildew, cinnamon-Litsea cubeba compound essential oil (CLCEO) microcapsule (CLCEOM), was synthesized with CLCEO as core materials and beta-cyclodextrin as wall materials. Fourier transform infrared spectroscopy and gas chromatography-mass spectrometry analyses indicated that major antifungal compounds of CLCEO were encapsulated in the cavity of beta-cyclodextrin. The inhibition zone experiment showed that CLCEOM retained antifungal effect on Aspergillus spp. strains even after storage for 2 months at 4 celcius. Besides, CLCEOM reduced total number of fungal colonies, relative abundance of Aspergillus spp., and aflatoxin B1 content of peanut kernels, and had positive effect on slowing down the increase in acid value of peanut oil without causing any adverse effect on the viability and sensory properties during storage process. Overall, CLCEOM presented good preser-vative effects on peanut kernels, providing evidence for its potential use as antimildew for peanut storage.

Automated summary

This research developed a new, efficient, and safe antimildew for postharvest storage of peanut kernels. The antimildew, cinnamon-Litsea cubeba compound essential oil (CLCEO) microcapsule (CLCEOM), was synthesized using CLCEO as the core material and beta-cyclodextrin as the wall material. The experiments showed that CLCEOM had significant antifungal effects on Aspergillus spp. strains even after 2 months of storage at 4 degrees Celsius. It also reduced the number of fungal colonies, the abundance of Aspergillus spp., and aflatoxin B1 content in peanut kernels, and had positive effects on slowing down the increase in acid value of peanut oil without causing any adverse effects on viability and sensory properties during storage.