不同光照强度下培养的栅藻的营养成分和氨基酸组成
Nutritional and Amino Acid Composition of Scenedesmus sp. Cultivated Under Various Light Intensities.
作者信息
Uguz Seyit, Sozcu Arda, Simsek Ercan, Yaslioglu Erkan
机构信息
Department of Biosystems Engineering, Faculty of Engineering and Architecture, Yozgat Bozok University, Yozgat, 66200, Turkey.
Department of Biosystems Engineering, Faculty of Agriculture, Bursa Uludag University, Bursa, 16059, Turkey.
出版信息
Curr Microbiol. 2025 May 2;82(6):274. doi: 10.1007/s00284-025-04248-4.
Microalgae like Scenedesmus sp. are promising alternatives for sustainable food and animal feed due to their high protein content and adaptability to different light intensities. Optimal light enhances growth and nutrient accumulation, while excessive light can reduce productivity. This study investigates the effects of different light intensities (100-300 µmol m⁻ s⁻) on the growth performance and nutritional composition of Scenedesmus sp., aiming to improve microalgae production efficiency and contribute to commercial standards for sustainable protein sources. Results show that dry biomass concentration (0.975 g L) and cell count (2.96) peaked at a light intensity of 200 μmol m s (P < 0.0001), while dry biomass decreased at 300 μmol m⁻ s⁻. Scenedesmus sp. grown at 200 and 300 µmol m s had higher carbohydrate contents (50.1% and 54%, P < 0.001), while the highest lipid content (42.3%) was observed at 100 µmol m s. The highest crude protein was recorded at 200 µmol m s (15.6%, P < 0.0001). Regarding amino acid composition, leucine was the most abundant essential amino acid (1.20 mg/100 mg dry weight), while glutamic acid was the most abundant non-essential amino acid (1.73 mg/100 mg). For color characteristics, biomass produced at 300 µmol m s exhibited a darker color, with the lowest L* value (21.66), and a more yellowish hue compared to 200 µmol m s. These findings highlight the importance of optimizing light conditions to enhance Scenedesmus sp. productivity for sustainable animal feed applications. This study indicates that the productivity of Scenedesmus sp. could be enhanced for biomass and protein production by maintaining an optimal light regime. By maximizing biomass yield and nutrient composition, this study supports the development of microalgae-based protein sources that can serve as a viable alternative to conventional feed ingredients, contributing to more sustainable and efficient feed production systems.
像栅藻属这样的微藻由于其高蛋白含量以及对不同光照强度的适应性，是可持续食品和动物饲料的有前景的替代品。最佳光照可促进生长和营养物质积累，而光照过强则会降低生产力。本研究调查了不同光照强度（100 - 300 μmol m⁻² s⁻¹）对栅藻属生长性能和营养成分的影响，旨在提高微藻生产效率并符合可持续蛋白质来源的商业标准。结果表明，干生物量浓度（0.975 g/L）和细胞计数（2.96）在光照强度为200 μmol m⁻² s⁻¹时达到峰值（P < 0.0001），而在300 μmol m⁻² s⁻¹时干生物量下降。在200和300 μmol m⁻² s⁻¹光照强度下生长的栅藻属碳水化合物含量较高（分别为50.1%和54%，P < 0.001），而在100 μmol m⁻² s⁻¹时观察到最高脂质含量（42.3%）。在200 μmol m⁻² s⁻¹时粗蛋白含量最高（15.6%，P < 0.0001）。关于氨基酸组成，亮氨酸是最丰富的必需氨基酸（1.20 mg/100 mg干重），而谷氨酸是最丰富的非必需氨基酸（1.73 mg/100 mg）。对于颜色特征，在300 μmol m⁻² s⁻¹下产生的生物量颜色较深，L*值最低（21.66），与200 μmol m⁻² s⁻¹相比色调更偏黄。这些发现突出了优化光照条件以提高栅藻属用于可持续动物饲料应用的生产力的重要性。本研究表明，通过维持最佳光照条件，可提高栅藻属用于生物量和蛋白质生产的生产力。通过最大化生物量产量和营养成分，本研究支持开发基于微藻的蛋白质来源，作为传统饲料成分的可行替代品，有助于建立更可持续和高效的饲料生产系统。
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