微生物接种对柑橘皮堆肥理化性质和细菌群落结构的影响。
Effect of microbial inoculation on physicochemical properties and bacterial community structure of citrus peel composting.
机构信息
School of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Chongqing University, Chongqing 400045, China.
School of Environment and Ecology, Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Chongqing University, Chongqing 400045, China.
出版信息
Bioresour Technol. 2019 Nov;291:121843. doi: 10.1016/j.biortech.2019.121843. Epub 2019 Jul 19.
In this study, microorganisms were inoculated during citrus peel composting for citrus waste recycling and valorisation. The physicochemical properties and the bacterial community structure of citrus peel composting inoculated microorganism were studied. The thermophilic stage of pilot-scale composting (T2) was 20 days longer than lab-scale composting (T1). C/N, organic matter, moisture, pectin and cellulose content decreased along with composing process, but the pH, soluble protein and total nutrient showed an opposite trend. The inoculation improved the richness and diversity of the bacterial community and the diversity index reached maximum on 21 days. As composting progress, Bacillus, Sphingobacterium and Saccharomonospora in inoculum became the dominant genus. Redundancy analysis showed that C/N, pectin degradation rate and temperature could explain 30.1%, 24.9% and 15.6% of the variation in bacterial genera, respectively.
本研究在柑橘皮堆肥过程中接种微生物，以实现柑橘废物的回收和增值。研究了接种微生物对柑橘皮堆肥理化性质和细菌群落结构的影响。中试规模堆肥（T2）的高温阶段比实验室规模堆肥（T1）长 20 天。C/N、有机质、水分、果胶和纤维素含量随着堆肥过程的进行而降低，而 pH 值、可溶性蛋白和总养分则呈现相反的趋势。接种提高了细菌群落的丰富度和多样性，多样性指数在 21 天时达到最大值。随着堆肥的进行，接种物中的芽孢杆菌、鞘氨醇单胞菌和糖单孢菌成为优势属。冗余分析表明，C/N、果胶降解率和温度分别可以解释细菌属变化的 30.1%、24.9%和 15.6%。
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