CCMAR-Centre of Marine Sciences, University of Algarve, Gambelas, 8005-139 Faro, Portugal.
CMP-Cimentos Maceira e Pataias, ALGAFARM - Unidade de Produção de Microalgas, 2445-411 Pataias, Portugal.
Molecules. 2019 Sep 3;24(17):3192. doi: 10.3390/molecules24173192.
Commercial production of microalgal biomass for food and feed is a recent worldwide trend. Although it is common to publish nutritional data for microalgae grown at the lab-scale, data about industrial strains cultivated in an industrial setting are scarce in the literature. Thus, here we present the nutritional composition and a microbiological and toxicological evaluation of sp. CTP4 biomass, cultivated in 100-m photobioreactors at an industrial production facility (AlgaFarm). This microalga contained high amounts of protein (31.2 g/100 g), dietary fibres (24.6 g/100 g), digestible carbohydrates (18.1 g/100 g) and ashes (15.2 g/100 g), but low lipid content (7.04 g/100 g). The biomass displayed a balanced amount of essential amino acids, -3 polyunsaturated fatty acids, and starch-like polysaccharides. Significant levels of chlorophyll (3.5 g/100 g), carotenoids (0.61 g/100 g), and vitamins (e.g., 79.2 mg ascorbic acid /100 g) were also found in the biomass. Conversely, pathogenic bacteria, heavy metals, cyanotoxins, mycotoxins, polycyclic aromatic hydrocarbons, and pesticides were absent. The biomass showed moderate antioxidant activity in several in vitro assays. Taken together, as the biomass produced has a balanced biochemical composition of macronutrients and (pro-)vitamins, lacking any toxic contaminants, these results suggest that this strain can be used for nutritional applications.
商业生产微藻生物质用于食品和饲料是近年来的全球趋势。尽管在实验室规模下培养的微藻的营养数据通常被公布，但在文献中，关于在工业环境中培养的工业菌株的数据却很少。因此，在这里我们介绍了 sp. CTP4 生物质的营养成分以及微生物学和毒理学评价，该生物质在工业生产设施（AlgaFarm）的 100m 光生物反应器中进行培养。这种微藻含有高蛋白（31.2g/100g）、膳食纤维（24.6g/100g）、可消化碳水化合物（18.1g/100g）和灰分（15.2g/100g），但脂质含量低（7.04g/100g）。该生物质含有适量的必需氨基酸、-3 多不饱和脂肪酸和淀粉样多糖。生物质中还发现了大量的叶绿素（3.5g/100g）、类胡萝卜素（0.61g/100g）和维生素（例如，100g 抗坏血酸 79.2mg）。相反，该生物质中不存在致病性细菌、重金属、蓝藻毒素、真菌毒素、多环芳烃和农药。该生物质在几种体外试验中表现出适度的抗氧化活性。总之，由于所生产的生物质具有宏量营养素和（前）维生素的平衡生化组成，且没有任何有毒污染物，这些结果表明该菌株可用于营养应用。
