Article
Agricultural Engineering
Renata Nunes Pereira, Debora Pez Jaeschke, Ligia Damasceno Ferreira Marczak, Rosane Rech, Giovana Domeneghini Mercali
Summary: This study evaluated the effects of ultrasound on the growth of Pseudoneochloris marina and Chlorella zofingiensis. The results showed that ultrasound treatment did not increase cell proliferation of P. marina, but reduced cell density, indicating possible cell damage. On the other hand, ultrasound treatment for C. zofingiensis resulted in a 65% increase in biomass concentration compared to the control. Overall, the study demonstrates the potential of ultrasound to enhance microalgae cell proliferation.
BIORESOURCE TECHNOLOGY
(2023)
Article
Energy & Fuels
Daniel A. Alfaro-Sayes, Jerome Amoah, Nova Rachmadona, Shinji Hama, Tomohisa Hasunuma, Akihiko Kondo, Chiaki Ogino
Summary: The aim of this study was to evaluate the effect of alginate immobilization on the growth and lipid productivity of the microalgae Chlorella sorokiniana. The results showed that immobilization technology can enhance the growth and lipid productivity of microalgae.
JOURNAL OF PHYSICS-ENERGY
(2023)
Article
Environmental Sciences
Rajendran Varunraj, Uthayakumar Priyadharshini, Kannusamy Vijay, Srinivasan Balamurugan
Summary: This study demonstrated the improvement of Chlorella vulgaris strain through adaptive laboratory evolution (ALE) under hypersaline conditions, resulting in increased lipid production without compromising cellular physiological parameters. The evolved strains showed higher lipid accumulation and antioxidant potential, while experiencing decreased carbohydrate and protein content.
ENVIRONMENTAL RESEARCH
(2023)
Review
Agricultural Engineering
Bianca Ramos Estevam, Luisa Fernanda Rios Pinto, Rubens Maciel Filho, Leonardo Vasconcelos Fregolente
Summary: The article summarizes the research on Botryococcus terribilis, including its main metabolites, cultivation conditions, extraction methods, and potential applications. The study found that Botryococcus terribilis has high oil productivity and various possible uses, but its biorefinery still faces economic and technical challenges.
BIOMASS & BIOENERGY
(2022)
Article
Biotechnology & Applied Microbiology
Ana Elisa Rodrigues-Sousa, Ivan V. O. Nunes, Alex B. Muniz-Junior, Joao Carlos M. Carvalho, Lauris C. Mejia-da-Silva, Marcelo C. Matsudo
Summary: This study examined the cultivation of Chlorella vulgaris using secondary effluent from the dairy industry. Results showed that nitrogen supplementation based on Bold medium ratio was the most effective in improving biomass growth. The final biomass composition displayed satisfactory levels of proteins and lipids, with concentrations of specific fatty acids.
BIOCHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Gabriela F. Ferreira, Luisa F. Rios Pinto, Patricia O. Carvalho, Mirela B. Coelho, Marcos N. Eberlin, Rubens Maciel Filho, Leonardo Fregolente
Summary: Microalgae are promising for biofuel production, but further research is needed for their potential in food, cosmetic, and pharmaceutical industries. Different species of microalgae exhibit varying growth parameters and fatty acid compositions, some of which are valuable for food and pharmaceutical industries.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Review
Biotechnology & Applied Microbiology
Sujeong Je, Yasuyo Yamaoka
Summary: Microalgae, particularly Chlorella spp., have been proposed as an alternative to fossil fuels due to their advantages such as faster growth, usage of non-arable land, recovery of nutrients from wastewater, efficient CO2 capture, and high amount of valuable biomolecules for humans. However, the cost-consuming cultivation, processing, and lipid extraction processes remain major restrictions in microalgal biofuel technology. This study provides a comprehensive review of lipid enhancement strategies for Chlorella cells, with a focus on regulating carbon sources, nutrients, stresses, and expression of exogenous genes to improve biomass production and lipid synthesis.
JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Patryk Ratomski, Malgorzata Hawrot-Paw, Adam Koniuszy
Summary: The study evaluated the use of sodium bicarbonate as an inexpensive CO2 source in the cultivation of Chlorella vulgaris, leading to increased biomass production and lipid accumulation. The addition of bicarbonate resulted in significant improvements in biomass content, productivity, and optical density in batch culture, showing potential for enhancing microalgae cultivation efficiency.
Article
Environmental Sciences
Ravi Hanumanthu, Seetharamaiah Nuthalapati
Summary: The effects of different combustion chamber geometries (PB1, PB2, PB3) and fuel injection pressure (FIP) (500, 750, and 1000 bar) with ternary fuel on diesel engine are discussed. It is observed that an increase in FIP improves brake thermal efficiency and reduces hydrocarbon emissions, while only causing a slight decrease in NOx emissions for PB2. In the case of PB3, NHRR, peak pressure, and ROPR all significantly increase with an enhancement in FIP, indicating an improvement in engine performance and efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Applied
Daniela Couto, Tania Melo, Tiago A. Conde, Ana S. P. Moreira, Paula Ferreira, Margarida Costa, Joana Silva, Rosario Domingues, Pedro Domingues
Summary: This study evaluated the efficiency of lipid extraction from Chlorella vulgaris and compared the effects of food-grade ethanol, ultrasound-assisted ethanol, and dichloromethane/methanol. The results showed that ultrasound-assisted ethanol and dichloromethane/methanol had the highest extraction yields, and the fatty acid profiles were identical among all extracts. However, the polar lipidome of the ethanol extracts was significantly different from the other two extracts. These findings are important for obtaining high yields of omega-3 and omega-6-rich extracts from C. vulgaris for food applications.
Article
Plant Sciences
Tintswalo Lindi Maselesele, Tumisi Beiri Jeremiah Molelekoa, Sefater Gbashi, Oluwafemi Ayodeji Adebo
Summary: This study employed a response surface methodology (RSM) approach and artificial neural network (ANN) models to optimize the production of a bitter gourd-grape beverage. The results showed that the models had satisfactory predictability and adequacy. The optimized conditions had a clear effect on the total titratable acidity (TTA), with higher concentrations of starter culture leading to higher TTA values. The study also optimized the level of bitter gourd juice to achieve a low-alcohol beverage.
Article
Agricultural Engineering
Mardiana Idayu Ahmad, Wardah Senusi, Fozy Binhweel, Sami Alsaadi
Summary: The current reliance on fossil fuels for energy consumption has led to various issues related to energy resources, economic stability, and environmental pollution. Biodiesel is a potential sustainable alternative, but its commercialization is hindered by high production costs. Azolla macroalgae, particularly Azolla filiculoides, is a promising feedstock for biodiesel production due to its high fatty acid content.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Environmental Sciences
R. Gokulan, S. Kavipriya, S. Krishnakumar, R. Dineshkumar, S. Krishnapriya, G. Pradeepa Sri
Summary: An experimental research on the production of biodiesel from lipids of chlorella vulgaris was conducted, which included determining the optimum growth time for chlorella vulgaris cultures and synthesizing biodiesel from lipids. The study aimed to develop a wastewater treatment system while producing renewable energy through algal growth.
GLOBAL NEST JOURNAL
(2023)
Article
Environmental Sciences
P. Kowalczyk, B. Ligas, D. Skrzypczak, K. Mikula, G. Izydorczyk, A. Witek-Krowiak, K. Moustakas, K. Chojnacka
Summary: The study prepared an innovative microelemental feed additive for laying hens based on waste biomass from the agricultural sector, and tested the release of components in conditions simulating the digestive tract of animals. The enriched biomass showed potential as a feed additive for sustainable agriculture.
ENVIRONMENTAL POLLUTION
(2021)
Article
Biology
Abdul Fattah Shaima, Nazlina Haiza Mohd Yasin, Nazlina Ibrahim, Mohd Sobri Takriff, Darvien Gunasekaran, Mahmud Y. Y. Ismaeel
Summary: Microalgae are promising sources of bioactive compounds for various applications. In this study, the antimicrobial properties and bioactive compounds of local microalgae were investigated. Chlorella sp. UKM8 methanol extract showed the highest antibacterial activity and contained phenol, hexadecanoic acid, phytol, and other compounds known for their antimicrobial activity. Further studies are needed to purify and understand the mechanism of these compounds.
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
(2022)
Article
Biology
Rashi Vishwakarma, Ashwani K. Rai
ARCHIVES OF BIOLOGICAL SCIENCES
(2014)
Article
Environmental Sciences
Rashi Vishwakarma, Dolly Wattal Dhar, Sudhir Saxena
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Green & Sustainable Science & Technology
Rashi Vishwakarma, Vidushi Dhaka, Thilini U. Ariyadasa, Anushree Malik
Summary: This review discusses the advantages and constraints of integrating algal technologies into the rural economy. Existing studies show that utilizing wastewater for algal cultivation can achieve significant biomass yields in sectors such as aquaculture and agriculture. Additionally, using algal biomass as a feed supplement in poultry and aquaculture can improve product quality and reduce production costs. However, more long-term studies are needed to establish the feasibility of using wastewater as a feed supplement and to explore the full utilization and downstream processing of harvested biomass.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Multidisciplinary
Saurabh Samuchiwal, Rashi Vishwakarma, Nagesh Vikram Singh, Shweta Kalia, Gunisha Wadhawan, Shaikh Ziauddin Ahammad, Anushree Malik
Summary: This study investigated the characteristics of suspended microbial biomass in anaerobically treated textile effluent and optimized a feasible separation process. The integration of the coagulation-flocculation process with anaerobic process showed high turbidity, COD, and color removal efficiencies, indicating its promising potential for textile effluent treatment.
SEPARATION SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Rashi Vishwakarma, Saptarshi Dey, Saurabh Samuchiwal, Anushree Malik
Summary: A green extraction method was developed using partially hydrolysed microalgal cells grown in biocompatible solvent, allowing simultaneous cultivation and extraction of bioproducts. The enzymatic pretreatment of the microalgal cells achieved incomplete digestion of the cell wall. Cultivating the enzymatically pretreated cells with biocompatible solvent resulted in a 53.33% increase in lipid content and a 22% higher carotenoid content compared to conventional extraction. The cost benefit analysis showed that this method was favorable for biodiesel production.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Medicinal
Rashi Vishwakarma, Ashwani Kumar Rai
NATURAL PRODUCTS JOURNAL
(2013)