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Study on rapid drying and spoilage prevention of potato pulp using solid-state fermentation with Aspergillus aculeatus.
Bioresource Technology ( IF 9.7 ) Pub Date : 2019-10-25 , DOI: 10.1016/j.biortech.2019.122323 Liyao Zhao 1 , Li Cheng 2 , Yu Deng 3 , Zhaofeng Li 2 , Yan Hong 2 , Caiming Li 2 , Xiaofeng Ban 2 , Zhengbiao Gu 2
Bioresource Technology ( IF 9.7 ) Pub Date : 2019-10-25 , DOI: 10.1016/j.biortech.2019.122323 Liyao Zhao 1 , Li Cheng 2 , Yu Deng 3 , Zhaofeng Li 2 , Yan Hong 2 , Caiming Li 2 , Xiaofeng Ban 2 , Zhengbiao Gu 2
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Effects of solid-state fermentation on rapid drying and spoilage prevention of potato pulp were evaluated. Pectin hydrolyzing and antibacterial ability of pectinase-secreting Aspergillus aculeatus and Bacillus subtilis were compared. A. aculeatus grew better in potato pulp, with highest pectinase yield of 342.71 ± 5.09 U/mL and rapid pH reduction to 3.76 ± 0.01. Next generation sequencing showed that the abundance of genera Candida and Enterobacter, which probably caused undesirable fermentation and spoilage, were significantly reduced after inoculation with A. aculeatus. In addition, fermentation with A. aculeatus significantly reduced water holding capacity from 16.63 ± 0.36 g/g to 7.78 ± 0.12 g/g, which resulted in lower viscosity and water binding capacity, and concomitantly significantly decreased moisture content from 76.05 ± 0.24% to 12.95 ± 0.19% after filtration and airflow drying. These results suggested that solid-state fermentation might be a promising technology for efficient processing and utilization of potato pulp.
中文翻译：
研究用棘孢曲霉固态发酵快速干燥和防止马铃薯浆变质的方法。
评估了固态发酵对马铃薯纸浆快速干燥和防止变质的影响。比较了果胶酶分泌果胶酶的刺果曲霉和枯草芽孢杆菌的果胶水解和抗菌能力。刺梨在马铃薯果肉中生长更好，果胶酶的最高产量为342.71±5.09 U / mL，pH迅速降低至3.76±0.01。下一代测序表明，接种了棘孢曲霉后，念珠菌和肠杆菌属的丰度显着降低了，这可能导致不希望的发酵和变质。此外，用刺果曲霉发酵将持水量从16.63±0.36 g / g显着降低到7.78±0.12 g / g，这导致较低的粘度和水结合能力，同时将水分含量从76.05±0.24％显着降低至12 过滤和气流干燥后，为95±0.19％。这些结果表明，固态发酵可能是有效加工和利用马铃薯浆的有前途的技术。
更新日期：2019-10-25
中文翻译：
研究用棘孢曲霉固态发酵快速干燥和防止马铃薯浆变质的方法。
评估了固态发酵对马铃薯纸浆快速干燥和防止变质的影响。比较了果胶酶分泌果胶酶的刺果曲霉和枯草芽孢杆菌的果胶水解和抗菌能力。刺梨在马铃薯果肉中生长更好，果胶酶的最高产量为342.71±5.09 U / mL，pH迅速降低至3.76±0.01。下一代测序表明，接种了棘孢曲霉后，念珠菌和肠杆菌属的丰度显着降低了，这可能导致不希望的发酵和变质。此外，用刺果曲霉发酵将持水量从16.63±0.36 g / g显着降低到7.78±0.12 g / g，这导致较低的粘度和水结合能力，同时将水分含量从76.05±0.24％显着降低至12 过滤和气流干燥后，为95±0.19％。这些结果表明，固态发酵可能是有效加工和利用马铃薯浆的有前途的技术。
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