• Journal of Life Science
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• v.31 no.5
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• pp.481-487
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• 2021

The purpose of this study was to identify fungi that degrade product value during the storage and distribution of confectionery products, and to investigate the antifungal effect of organic acid and UV-C treatments on high carbohydrate products. Fungi isolated from spoiled high carbohydrate confectionery were identified as Wallemia sp., Aspergillus sp-1 and Aspergillus sp-2 depending on homologies with ITS1 and ITS4 sequences. The isolated fungi were assayed for antifungal activity by treatment with acetic acid, citric acid, lactic acid or maleic acid. As a result, it was confirmed that the growth of Wallemia sp. and Aspergillus sp-2 was suppressed by treatment with 0.2 M and 0.35 M acetic acid, respectively. In addition, as a result of confirming the antifungal effect according to the UV-C irradiation time, the growth inhibitory effects of Wallemia sp. and Aspergillus sp-2 were shown in irradiation for 30 min and the growth inhibitory effect of Aspergillus sp-1 was shown in irradiation for 40 min. The result of the sensory evaluation of the untreated and 0.35 M acetic acid-treated high carbohydrate confectionery, there were not significant changes in taste, color, abnormal taste, hardness and texture, but there were significant differences in sour taste and smell. As a result of the above study, the effect of inhibiting fungi growth on the product by treatment with organic acid and UV-C irradiation was confirmed, and it is expected to be used in confectionery that were concerned about the occurrence of fungi in the distribution process.

• Food Science and Preservation
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• v.20 no.6
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• pp.798-804
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• 2013

Chlorella is an attractive potential food source because it is high in protein and other essential nutrients; when dried, it is about 45% protein, 20% fat, 20% carbohydrate, 5% fibre, and 10% minerals and vitamins. It has been widely used as a well-being food. We investigated the quality characteristics of cookies prepared after addition of various concentrations of chlorella powder (0%, 1%, 3%, and 5%, all w/w) as a substitute for flour. In this study, as chlorella powder concentration rose, decreases in the moisture content, pH, L, a and b value became evident. The spread factor and hardness of the cookies slightly increased after the addition of chlorella powder. Sensory evaluation scores in terms of color, flavor, and texture were statistically very similar, but taste and overall acceptability scores were lower than those of the control. The result of this study showed that the quality of the cookies with the addition of 1% chlorella powder was the best in terms of its taste, flavor, texture, and sensory properties.