Protein extraction from microalgae residue and nutritional assessment.

On the basis of determining isoelectric point of algae residue protein obtained from Scenedesmus dimorphus, this study investigated the effects of pH values, ratio of liquid to solid, extraction temperature and time on protein extraction rates, and assessed the nutritional value of protein extracted from microalgae residues. The results from orthogonal experiments revealed the optimum conditions for extracting proteins from algal residues (pH: 12; liquid-to-solid ratio: 40 mL/g; extraction temperature: 45 ℃; extraction time: 140 min). It was observed that under the optimal conditions, the protein extraction rate was 40.

Photoprotective carbon redistribution in mixotrophic Haematococcus pluvialis under high light stress.

Mixotrophy of Haematococcus pluvialis is a potential strategy for producing astaxanthin. However, this strategy has not been extensively commercialized because the mixotrophic mechanisms by which H. pluvialis overcomes high light stress are unclear.

Assessment of a Novel Oleaginous Filamentous Microalga Klebsormidium sp. Lgx80 (Streptophyta, Klebsormidiales) for Biomass and Lipid Production.

Commercial cultivation of eukaryotic microalgae has so far employed a unicellular form of species only (e.g., Chlorella pyrenoidosa, Dunaliella salina, and Haematococcus pluvialis).

Keggin-type Heteropolyacids-Catalyzed Selective Hydrothermal Oxidation of Microalgae for Low Nitrogen Biofuel Production.

Hydrothermal liquefaction (HTL) of microalgae for biofuel production is suffering from low bio-oil yield and high heteroatomic compositions owing to their low efficiency and selectivity to hydrolysis of cellular compounds. Hereby we report Keggin-type (Mo-V-P) heteropolyacids (HPAs)-catalyzed HTL of microalgae for efficient low-nitrogen biocrude production. The increases of reaction temperature, reaction time, and vanadium substitution degrees of HPAs are favorable to biocrude yield initially, whereas a significant decrease of biocrude yield is observed owing to the enhanced oxidation of carbohydrates above the optimum reaction conditions.

Factors Affecting the Mixotrophic Flagellate Poterioochromonas malhamensis Grazing on Chlorella Cells.

Grazing behaviour between protozoa and phytoplankton exists widely in planktonic ecosystems. Poterioochromonas malhamensis is a well-known and widespread mixotrophic flagellate, which is recognized to play an important role within marine and freshwater planktonic ecosystems and regarded as the greatest contamination threat for mass algal cultures of Chlorella. In this study, a comprehensive range of factors, including morphological characters, biochemical compositions, and specific growth rate of ten species or strains of Chlorella, were evaluated for their effect on the feeding ability of P.

Influence of growth phase on the harvesting of Scenedesmus acuminatus using ultrafiltration.

Cellular characteristics and algogenic organic matter (AOM) properties change with culture time. This study aims to understand the changes throughout the growth phase, and their effect on Scenedesmus acuminatus harvesting using ultrafiltration. The variations in cellular particle size distribution, cellular EPS content, and the biochemical composition and molecular weight of AOM were analyzed, followed by the membrane harvesting of the original S.

A novel low cost microalgal harvesting technique with coagulant recovery and recycling.

In this study, a novel low cost and sustainable microalgal harvesting technique was developed using the concept of coagulant recovery concentration and recycling. Al can be recovered from harvested Scenedesmus acuminatus biomass with 0.1 M HCl, at an acid solution-biomass ratio of 250 ml g.

iASPP facilitates tumor growth by promoting mTOR-dependent autophagy in human non-small-cell lung cancer.

Autophagy serves a critical function in the pathogenesis, response to therapy and clinical outcome in cancers. Although a recent report showed a role of iASPP in suppressing autophagy, its potential activity as a regulator of autophagy has not been investigated in lung cancer. Here we investigated the potential function and molecular mechanism of iASPP in mediating autophagy in human non-small-cell lung cancer.

In Situ Enzymatic Conversion of IMET1 Biomass into Fatty Acid Methyl Esters.

Conventionally, production of methyl ester fuels from microalgae occurs through an energy-intensive two-step chemical extraction and transesterification process. To improve the energy efficiency, we performed in situ enzymatic conversion of whole algae biomass from an oleaginous heterokont microalga IMET1 with the immobilized lipase from . The fatty acid methyl ester yield reached 107.