Composition analysis and application of degradation products of whole feathers through a large scale of fermentation
Composition analysis and application of degradation products of whole feathers through a large scale of fermentation
复制标题
全羽毛大规模发酵降解产物的成分分析及应用
DOI：
10.1007/s11356-012-0763-x
复制
发表时间：
2012-08-01
影响因子：
5.8
通讯作者：
Zhou, Mei-Hua
中科院分区：
文献类型：
--
作者：
Cao, Zhang-Jun;Lu, Dan;Zhou, Mei-Hua
PurposeFeathers are one of the most abundant bioresources. They are discarded as waste in most cases and could cause environmental pollution. On the other hand, keratin constituted by amino acids is the main component of feathers. In this article, we reported on biorefined feathers and integrants and application of degraded products.Materials and methodsThe fermentation of whole chicken feathers withStenotrophomonas maltophiliaDHHJ in a scale-up of a 5-L bioreactor was investigated in this article. The fermentation process was controlled at 0.08 MPa pressure, 2.5 L/min airflow, and 300 rpm as 100% oxygen saturation level, 40°C, and pH 7.8.ResultsFeathers were almost completely degraded in the tested fermentation reaction with the following conditions: 80 g of whole feathers in 3 L fermentation broth for 72 h, seed age of 16 h, 100 mL inoculation amount, and 50% oxygen saturation level. The degraded products contain 397.1 mg/L soluble protein that has mass weight ranging from 10 to 160 kD, 336.9 mg/L amino acids, and many kinds of metal ions. The fermentation broth was evaluated as leaf fertilizer and found to increase plant growth to 82% or 66% for two- or fourfold dilutions, respectively. In addition, in a hair care assay, the broth showed a hair protective function by increasing weight, flexibility, and strength of the treated hair.ConclusionsThe whole feathers were degraded completely byS. maltophiliaDHHJ. The degraded product includes many factors to life, such as peptides, amino acids, and mineral elements. It could be applied as leaf fertilizer and hair care product.
