Article
Agricultural Engineering
Aye Aye Myint, Patrick Hariyanto, Muhammad Irshad, Cao Ruqian, Sabrinna Wulandari, Min Eui Hong, Sang Jun Sim, Jaehoon Kim
Summary: A novel integrated extraction technique was demonstrated to achieve high recovery of natural astaxanthin from wet encysted Haematococcus pluvialis without the need for a pre-drying step. By researching the most suitable green solvent and optimizing the extraction conditions, a high recovery of astaxanthin and extraction yield were achieved. The biphasic solvent system played a key role in this process.
BIORESOURCE TECHNOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Adila Gherabli, Nabil Grimi, Julien Lemaire, Eugene Vorobiev, Nikolai Lebovka
Summary: The freshwater microalga Haematococcus pluvialis is a cell factory for natural astaxanthin, with 4-7% of its total dry weight composed of astaxanthin. The bioaccumulation of astaxanthin in H. pluvialis cysts is a complex process dependent on different stress conditions during cultivation. This review analyzes the various steps in H. pluvialis' processing, including cultivation, biomass harvesting, cell disruption, extraction, and purification techniques. It also collects information on cell structure, biomolecular composition, properties, and the bioactivity of astaxanthin in H. pluvialis, with special emphasis on the recent progress in applying electrotechnologies for growth and biomolecule recovery.
Review
Agricultural Engineering
Bolam Kim, Soo Youn Lee, Aditya Lakshmi Narasimhan, Sangui Kim, You-Kwan Oh
Summary: The green microalga Haematococcus pluvialis is a valuable source of astaxanthin, a powerful antioxidant widely used in various industries. The unique cyst-like cell with a rigid three-layered cell wall formed during astaxanthin accumulation presents challenges for extraction. Various cell disruption methods and downstream processes for sustainable development are also discussed in this review.
BIORESOURCE TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Petras Venckus, Ieva Endriukaityte, Kotryna Cekuolyte, Renata Gudiukaite, Andrius Pakalniskis, Egle Lastauskiene
Summary: This study tested the effects of silver nanoparticles on Haematococcus pluvialis and found that high concentrations of AgNPs significantly reduced culture productivity in green-stage cultures, while the impact on red-stage cultures was smaller. The addition of AgNPs also led to changes in cell morphology, including deformations, disrupted cytokinesis, and induced sexual reproduction.
Article
Green & Sustainable Science & Technology
Gannoru Kankanamalage Sanuji Hasara Nishshanka, Vinoj Chamilka Liyanaarachchi, Pemaththu Hewa Viraj Nimarshana, Thilini Udayangani Ariyadasa, Jo-Shu Chang
Summary: The microalga Haematococcus pluvialis has high biotechnological potential for producing various valuable compounds. Biorefining, which integrates multiple production processes in a single facility, can maximize the utilization of feedstock and reduce resource consumption. This review discusses the potential of biorefining H. pluvialis to promote more sustainable and cleaner production technologies.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Agricultural Engineering
Yongteng Zhao, Hui-Ping Wang, Chunli Yu, Wei Ding, Benyong Han, Shuxiang Geng, Delu Ning, Ting Ma, Xuya Yu
Summary: The study revealed that melatonin treatment upregulated the biosynthesis of astaxanthin and lipids in Haematococcus pluvialis, affecting the accumulation process through the regulation of gene expression and metabolic pathways. The treatment may promote coproduction of astaxanthin and lipids by regulating the carbon-nitrogen balance and antioxidant system.
BIORESOURCE TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Henrique Vechio, Andre Bellin Mariano, Rafael Bruno Vieira
Summary: The study investigated the extraction of astaxanthin from Haematococcus pluvialis using acid hydrolysis and solid-liquid extraction, finding that the optimal conditions with hydrochloric acid and acetone resulted in a high recovery rate of 99%. Even under optimal conditions, acid hydrolysis did not completely disrupt the cell wall, indicating that solvent accessibility occurred through microperforations.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Jae Been Lee, Yun Hwan Park, Min Seo Jeon, Sok Kim, Yoon-E Choi
Summary: In this study, the researchers successfully increased the production of astaxanthin in Haematococcus pluvialis by combining polyethylenimine (PEI) with chitosan. The polyethylenimine concentration had an effect on astaxanthin accumulation, while the molecular weight of chitosan did not. The treatment also increased the reactive oxygen species content in cells, leading to the upregulation of enzymes involved in astaxanthin biosynthesis. The PEI-chitosan fiber treatment showed high recyclability and maintained over 90% astaxanthin production efficiency.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Applied
Walter Pitacco, Chiara Samori, Laura Pezzolesi, Virginia Gori, Antonio Grillo, Matteo Tiecco, Martina Vagnoni, Paola Galletti
Summary: Three novel hydrophobic deep eutectic solvents (DESs) based on oleic acid and terpenes were prepared and used to extract astaxanthin. The DESs showed high efficiency in extracting astaxanthin and their chemical composition was safe and edible. The carotenoid profile obtained using DESs was similar to that obtained using traditional organic solvents. The thymol:oleic acid DES (TAO) exhibited superior antioxidant properties and could preserve astaxanthin content after light exposure, making it a promising formulation for the food ingredients/additives industry.
Article
Agricultural Engineering
Hang Guo, Tao Li, Yongteng Zhao, Xuya Yu
Summary: Copper treatment significantly increased astaxanthin and lipid synthesis in Haematococcus pluvialis, leading to upregulation of biosynthesis genes and antioxidant enzyme-related genes, as well as a decrease in reactive oxygen species levels. Additionally, copper induced the activation of protein kinases, facilitating the production of astaxanthin and lipids in the algae.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Kuan Shiong Khoo, Chien Wei Ooi, Kit Wayne Chew, Su Chern Foo, Jun Wei Lim, Yang Tao, Ning Jiang, Shih-Hsin Ho, Pau Loke Show
Summary: This study successfully extracted astaxanthin from H. pluvialis microalgae using CO2-based alkyl carbamate ILs, with DIMCARB showing the best performance. The optimized conditions resulted in a high yield of astaxanthin and the extracted compound displayed good antioxidant capacity. The distillable IL used in this extraction process proved to be suitable for extracting phytonutrients from algae sources.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Plant Sciences
Biljana Todorovic, Veno Jasa Grujic, Andreja Urbanek Krajnc, Roman Kranvogl, Jana Ambrozic-Dolinsek
Summary: The study aimed to determine the content of astaxanthin and its esterified forms in Haematococcus pluvialis samples, identified eleven astaxanthin monoesters, six astaxanthin diesters, and found that all three solvents (MTBE, HEX-IPA, ACE) were effective for extraction, with MTBE and hexane-isopropanol extracting the most astaxanthin.
Article
Chemistry, Multidisciplinary
Andreas Bauer, Mirjana Minceva
Summary: The microalgae Haematococcus pluvialis is used for biotechnological production of astaxanthin, with extraction achieved by germination of cyst cells instead of mechanical disruption, improving extraction efficiency.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Raul Aravena, Jose M. del Valle, Juan C. de la Fuente
Summary: This study compared the supercritical CO2 extraction of astaxanthin from disrupted Haematococcus pluvialis cysts under different conditions. The presence of water in an aqueous suspension affected the extraction rate and selectivity. While extraction from dry powder beds was faster, the aqueous suspension extraction was more sensitive to temperature.
JOURNAL OF SUPERCRITICAL FLUIDS
(2022)
Article
Pharmacology & Pharmacy
Marta Vinha Vieira, Roberto Bianchini Derner, Elenara Lemos-Senna
Summary: Haematococcus pluvialis produces a significant amount of carotenoids, particularly astaxanthin, a powerful antioxidant compound. This study encapsulated the carotenoids into poly-lactide-co-glycolide nanocapsules to develop a thermosensitive hydrogel with sustained release of carotenoids, showing promising antioxidant activity for prolonged skin protection.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2021)