Seasonal variation in the nutrient profile of Arthrospira fusiformis biomass harvested from an Ethiopian soda lake, Lake Chitu
Seasonal variation in the nutrient profile of Arthrospira fusiformis biomass harvested from an Ethiopian soda lake, Lake Chitu
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DOI：
10.1007/s10811-017-1359-0
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发表时间：
2018-06-01
影响因子：
3.3
通讯作者：
Gray, David
中科院分区：
文献类型：
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作者：
Assaye, Hirut;Belay, Amha;Gray, David
节旋藻生物量收获的营养配置文件的季节性变化的程度进行了调查，以评估在一年的时间内的产品质量的变化。湿季生物量样品的蛋白质含量为47.9%至55.7%，旱季样品的蛋白质含量为39.2%至40.8%。旱季样品的特点是相对较高的碳水化合物值（38.0-41.3%）。较高比例的氨基酸和不饱和脂肪酸的记录生物量收获在雨季。同样，在雨季生物量样本中记录到较高的植物营养素（色素）含量：叶绿素a（8.2-10.3 mg g（-1））、藻胆蛋白（104.1-120.7 mg g（-1））、总类胡萝卜素（3.17-4.31 mg g（-1））和β-胡萝卜素（1.24-1.61 mg g（-1））。Na和K的含量较高的旱季生物量，而其他主要的（钙，磷，镁）和微量（锰，铁，铜，锌，硒）矿物被发现相对较高的数量在雨季生物量。发现来自赤土湖的节旋藻的营养成分与市场上的商业节旋藻产品中发现的营养成分相对相当。的研究结果的意义进行了讨论，从这个湖节旋藻生物量的潜在可持续生产。
The extent of seasonal variation in the nutrient profile of Arthrospira biomass harvested from Lake Chitu was investigated to evaluate the variability of the quality of the product over a period of a year. Protein content varied from 47.9 to 55.7% for wet season biomass samples and from 39.2 to 40.8% for dry season samples. Dry season samples were characterized by relatively higher carbohydrate values (38.0-41.3%). Higher proportion of amino acids and unsaturated fatty acids were recorded for biomass harvested in wet season. Similarly, higher contents of phytonutrients (pigments) were recorded for wet season biomass samples: chlorophyll a (8.2-10.3 mg g(-1)), phycobiliproteins (104.1-120.7 mg g(-1)), total carotenoids (3.17-4.31 mg g(-1)), and beta-carotene (1.24-1.61 mg g(-1)). The contents of Na and K were higher for a dry season biomass whereas other major (Ca, P, Mg) and trace (Mn, Fe, Cu, Zn, Se) minerals were found relatively in higher quantities in a wet season biomass. The nutritional composition of Arthrospira from Lake Chitu was found to be relatively comparable to that found in commercial Arthrospira products in the market. The significance of the findings is discussed in relation to potential sustainable production of Arthrospira biomass from this lake.