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首页> 外文期刊>African Journal of Biotechnology >Production of value added materials by subcritical water hydrolysis from krill residues extracted by supercritical carbon dioxide
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Production of value added materials by subcritical water hydrolysis from krill residues extracted by supercritical carbon dioxide

机译：通过超临界二氧化碳提取的磷虾残留物的亚临界水水解生产增值材料

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摘要

The aim of this?study?was the determination of the best experimental conditions for the production of useful materials such as amino acids by subcritical water hydrolysis from supercritical carbon dioxide extracted krill residues and to compare the results with raw krill. Subcritical water hydrolysis efficiency from raw and de-oiled krill was examined over the temperature range of 200 to 280°C, ratio of material to water for hydrolysis was 1:50 g/ml and for water sample contact equilibration times of 5 min to decrease the decomposition of amino acids. Nitrogen and air were used as atmosphere at pressure?estimated to be between 0.101 and 6.41 MPa. The hydrolysis efficiencies of glycine, arginine, and leucine were found to be increased with increasing water temperature, consistent with higher solubility at higher temperatures. The highest yield of amino acids in de-oiled krill hydrolysate was at 280°C. While, the highest amino acid yield in raw krill hydrolysate was at low temperature 200°C. Also, reducing sugar content was analyzed in both samples and the results showed that the yield of reducing sugar in deoiled krill hydrolysate was higher than that of raw krill hydrolysate.
机译：研究的目的是什么？研究是通过从超临界二氧化碳提取的磷虾残留物中亚临界水水解产生有用的材料的最佳实验条件，例如氨基酸，并将结果与​​未加工的磷虾进行比较。在200至280℃的温度范围内检查来自原油和脱油克里尔的亚临界水水解效率，水解的水与水的水的比例为1:50 g / ml，水样触点5分钟的水样触点平衡时间减少氨基酸的分解。在压力下使用氮气和空气作为气氛？估计在0.101和6.41MPa之间。发现甘氨酸，精氨酸和亮氨酸的水解效率随着水温的增加而增加，与较高温度较高的溶解度一致。脱油磷酸盐水解产物中氨基酸的最高产率为280℃。虽然，原料磷酸盐水解产物中的最高氨基酸产率在低温200℃下。此外，在两种样品中分析了还原糖含量，结果表明，碎磷酸盐水解产物中还原糖的产率高于未加工磷酸盐水解产物。

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