M. Chronis, Vasiliki Christopoulou, S. Papadaki, Marina Stramarkou, M. Krokida
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Optimization of Mild Extraction Methods for the Efficient Recovery of Astaxanthin, a Strong Food Antioxidant Carotenoid from Microalgae
Microalgae represent an important source of bioactive compounds for food applications. In this study, multifunctional extracts from Haematococcus pluvialis (H. Pluvialis) microalga have been developed in order to be used as food additives. Total extracts were recovered by ultrasound assisted extraction using eco-friendly and food grade solvents. Five different ratios ranging from 1/100 to 1/5 g biomass/ mL solvent were studied in different ultrasound intensities in order to optimise the extraction of carotenoids, especially of astaxanthin. The produced extracts were analysed using High Pressure Liquid Chromatography (HPLC-DAD) and UV-Vis spectroscopy techniques. Acetone was the most efficient solvent for the extraction of carotenoids in all tested ratios. However, D-limonene and medium chain triglycerides extracts also gave a satisfying recovery of carotenoids. D-limonene was the preferred solvent since extracts with high amounts of carotenoids were recovered, permitting their direct use in food products and avoiding further condensation steps.
期刊介绍：
Chemical Engineering Transactions (CET) aims to be a leading international journal for publication of original research and review articles in chemical, process, and environmental engineering. CET begin in 2002 as a vehicle for publication of high-quality papers in chemical engineering, connected with leading international conferences. In 2014, CET opened a new era as an internationally-recognised journal. Articles containing original research results, covering any aspect from molecular phenomena through to industrial case studies and design, with a strong influence of chemical engineering methodologies and ethos are particularly welcome. We encourage state-of-the-art contributions relating to the future of industrial processing, sustainable design, as well as transdisciplinary research that goes beyond the conventional bounds of chemical engineering. Short reviews on hot topics, emerging technologies, and other areas of high interest should highlight unsolved challenges and provide clear directions for future research. The journal publishes periodically with approximately 6 volumes per year. Core topic areas: -Batch processing- Biotechnology- Circular economy and integration- Environmental engineering- Fluid flow and fluid mechanics- Green materials and processing- Heat and mass transfer- Innovation engineering- Life cycle analysis and optimisation- Modelling and simulation- Operations and supply chain management- Particle technology- Process dynamics, flexibility, and control- Process integration and design- Process intensification and optimisation- Process safety- Product development- Reaction engineering- Renewable energy- Separation processes- Smart industry, city, and agriculture- Sustainability- Systems engineering- Thermodynamic- Waste minimisation, processing and management- Water and wastewater engineering
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