Article
Biotechnology & Applied Microbiology
Ruilin Huang, Ruirui Ding, Yu Liu, Fuli Li, Zhaohui Zhang, Shi'an Wang
Summary: This study obtained a yellow mutant of Xanthophyllomyces dendrorhous through mutagenesis and identified the GATA transcription factor XdWC2 as a key regulator of carotenoid biosynthesis. XdWC2 interacts with XdWC1 to form a complex that regulates the expression of key genes involved in the synthesis of astaxanthin. The findings provide insights into the global regulation of astaxanthin biosynthesis and offer guidance for enhancing astaxanthin production in yeast strains.
MICROBIAL BIOTECHNOLOGY
(2022)
Article
Chemistry, Physical
Jaroslaw Chwastowski, Pawel Staron
Summary: The study focused on using immobilized Phaffia rhodozyma cells in natural biopolymer to enhance the bioremediation of toxic chromium compounds in aqueous solutions. The immobilized cells were in the form of spheres (PRS) and flat coatings (PRC) using sodium alginate. The results showed that PRC had higher bioremediation properties than PRS, with a 15% higher chromium removal rate. The study also demonstrated that both PRS and PRC can be used multiple times without a decrease in efficiency for removing chromium ions from the environment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Review
Food Science & Technology
Cassamo U. Mussagy, Jorge F. B. Pereira, Laurent Dufosse, Vijaya Raghavan, Valeria C. Santos-Ebinuma, Adalberto Pessoa Jr
Summary: This article reviews the main methods for producing Astaxanthin (AXT) using the yeast Phaffia rhodozyma strains, emphasizing the impact of conventional and non-conventional procedures for extracting AXT from yeast cells. Furthermore, future research directions are identified, including the use of low-cost residues to improve the economic and environmental sustainability of the bioprocess, the use of environmentally-friendly and low-energy operations for the extraction and purification of AXT, as well as the need for further human clinical trials using yeast-based AXT.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2023)
Article
Chemistry, Multidisciplinary
Olha Stefanyshyn, Alla Hunchak, Volodymyr Starchevskyy, Yuriy Salyha
Summary: The study aims to optimize the disruption mode of yeast Phaffia rhodozyma KNH 1 using a vibration-resonant low-frequency cavitator (VLC). The yeast biomass was disrupted in VLC with water cooling, a capacity of 800 W, and various resonant frequencies. The results showed that the yield of processed biomass depended on the culture age and treatment mode, with optimal results achieved at specific frequencies and treatment durations in VLC.
CHEMISTRY & CHEMICAL TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Cassamo U. Mussagy, Pedro G. P. Silva, Camila F. Amantino, Janaina F. M. Burkert, Fernando L. Primo, Adalberto Pessoa, Valeria C. Santos-Ebinuma
Summary: This study successfully enhanced the biosynthesis of astaxanthin by using synthetic substrates and a stirred tank bioreactor. The astaxanthin-rich extracts showed potential antioxidant activity and dyeing capabilities, suggesting the possibility of using astaxanthin as a natural dyeing agent for textiles.
BIOCHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Pedro Garcia Pereira Silva, Daniel Prescendo Junior, Janaina Fernandes de Medeiros Burkert, Lucielen Oliveira Santos
Summary: This study investigated the effective carotenoid extraction from Phaffia rhodozyma biomass by improving the extraction process and evaluating color properties, antioxidant activity, and energy consumption. The results showed that the adapted acetone procedure and freeze-drying pretreatment achieved high carotenoid extraction and antioxidant activity. Economic evaluation indicated that the adapted process was more cost-effective than the standard process.
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Forestry
Don A. White, Richard P. Silberstein, Francisco Balocchi-Contreras, Juan Jose Quiroga, Dean F. Meason, Joao H. N. Palma, Pablo Ramirez de Arellano
Summary: The comparison of water use between plantations and alternative land uses in central Chile is crucial for natural resource management. The study found that plantations have higher transpiration rates compared to local native forests, mainly due to the higher transpiration rates of plantation species.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Biochemistry & Molecular Biology
Jing-Xian Lai, Wan-Ping Liu, Jie Bu, Xiong Chen, Bin-Bin Hu, Ming-Jun Zhu
Summary: This study investigated the production of carotenoids from food waste using a mutant strain of P. rhodozyma. The mutant strain, obtained through UV mutagenesis and flow cytometry, showed stable and high carotenoid production at 25 degrees C, with a 31.6% increase compared to the wild strain. Furthermore, feeding wet food waste resulted in higher carotenoid production (192.6 mg/L) compared to batch culture. Fermentation of 1 kg food waste by P. rhodozyma yielded 373 g freeze-dried products containing 784 mg carotenoids and 111 mg astaxanthin. The study highlights the potential of mutant screening, astaxanthin production, and the utilization of food waste.
BIOTECHNOLOGY AND APPLIED BIOCHEMISTRY
(2023)
Article
Biotechnology & Applied Microbiology
Chen Zhang, Xiangying Zhao, Mingjing Yao, Jiaxiang Zhang, Liping Liu, Qingshuai Li, Hui Xu, Ruiguo Li, Yanjun Tian
Summary: In this study, sweet potato juice was used as a medium for high-density cultivation of Phaffia rhodozyma, and batch fermentation achieved an 18.86% increase in yeast biomass and a 32.5% increase in astaxanthin yield. After 120 hours of cultivation, a biomass of 45.2 g/L and astaxanthin yield of 19.465 mg/L were obtained. The optimized system can significantly reduce the raw material costs for astaxanthin production by P. rhodozyma and enhance the comprehensive utilization of sweet potato resources.
ELECTRONIC JOURNAL OF BIOTECHNOLOGY
(2023)
Article
Agronomy
Daxing Gu, Jiashuang Qin, Longkang Ni, Dennis Otieno, Kechao Huang, Wen He, Yuqing Huang, Ping Zhao
Summary: The study found that eucalyptus maintains its water status under drought conditions by regulating leaf water potential and hydraulic behavior. Throughout the study period, there were significant variations in leaf water potential, but the gradient between roots and leaves remained constant, indicating an isohydrodynamic regulation under drought. As drought intensity increased, both stomatal and whole-tree hydraulic conductance linearly declined, demonstrating a tight correlation between stomatal response to evaporative demand and whole-tree hydraulic conductance.
AGRICULTURAL AND FOREST METEOROLOGY
(2021)
Article
Forestry
Zhichao Wang, Siru Liu, Yuxing Xu, Wankuan Zhu, Apeng Du
Summary: The variation in transpiration water consumption between eucalyptus species is currently unknown, which makes it uncertain whether a specific eucalyptus species is suitable for large-scale planting in a specific area, or if interspecific differences need to be considered when estimating eucalyptus water consumption. This study monitored the sap flow and estimated the transpiration of three eucalyptus species. The results showed that transpiration was influenced by meteorological factors, soil water content, and leaf area index, with variations in the response to each influencing factor among species. Species-specific transpiration prediction models were developed. The study highlights the importance of considering interspecific differences in transpiration rates when choosing eucalyptus species for regional planting.
Article
Energy & Fuels
Seth E. Younger, C. Rhett Jackson, Mackenzie J. Dix, Peter V. Caldwell, Doug P. Aubrey
Summary: The increasing demand for woody crops for bioenergy raises concerns about water yield due to increased evapotranspiration. This study compared the water budgets of loblolly pine and Eucalyptus benthamii and found that Eucalyptus had higher evapotranspiration and biomass production. The results also showed that evapotranspiration was not affected by groundwater depth.
BIOENERGY RESEARCH
(2023)
Article
Microbiology
S. Nagal, A. Raja, I. Gupta, S. N. Adin, B. P. Panda
Summary: Beta-carotene production was achieved through the treatment of mutated P. rhodozyma cells with different concentrations of beta-ionone. The optimized conditions resulted in a maximum production of 750μg/g.
Article
Plant Sciences
L. M. Guedes, N. Aguilera, B. G. Ferreira, J. Becerra, V. Hernandez, R. M. S. Isaias
Article
Chemistry, Medicinal
Felipe Moraga-Nicolas, Claudia Jara, Ricardo Godoy, Patricio Iturriaga-Vasquez, Herbert Venthur, Andres Quiroz, Jose Becerra, Ana Mutis, Emilio Hormazabal
REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY
(2018)
Article
Chemistry, Medicinal
Felipe Moraga-Nicolas, Claudia Jara, Ricardo Godoy, Patricio Iturriaga-Vasquez, Herbert Venthur, Andres Quiroz, Jose Becerra, Ana Mutis, Emilio Hormazabal
REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY
(2018)
Article
Environmental Sciences
Ramon Ahumada-Rudolph, Vanessa Novoa, Jose Becerra
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2019)
Article
Neurosciences
Javiera Gavilan, Daniela Mennickent, Oscar Ramirez-Molina, Sergio Trivino, Claudia Perez, Tiare Silva-Grecchi, Pamela A. Godoy, Jose Becerra, Luis G. Aguayo, Gustavo Moraga-Cid, Victoria San Martin, Gonzalo E. Yevenes, Patricio A. Castro, Leonardo Guzman, Jorge Fuentealba
JOURNAL OF ALZHEIMERS DISEASE
(2019)
Article
Polymer Science
Hernan Valle, Raquel Palao-Suay, Maria Rosa Aguilar, Julio San Roman, Jose Becerra, Bernabe Rivas, Ramalinga Viswanathan Mangalaraja
JOURNAL OF APPLIED POLYMER SCIENCE
(2019)
Article
Mycology
Mario Rajchenberg, Maria Belen Pildain, Daniel Cajas Madria, Andres de Errasti, Cristian Riquelme, Jose Becerra
MYCOLOGICAL PROGRESS
(2019)
Article
Marine & Freshwater Biology
Fidelina Gonzalez, Katia Saez, Maria Eliana Vega, Berenice Bizama, Jose Becerra, Irene Lepez, Victor Hernandez, Mario Silva
REVISTA DE BIOLOGIA MARINA Y OCEANOGRAFIA
(2019)
Article
Biotechnology & Applied Microbiology
Solange Torres, Mariela Gonzalez-Ramirez, Javiera Gavilan, Cristian Paz, Goetz Palfner, Norbert Arnold, Jorge Fuentealba, Jose Becerra, Claudia Perez, Jaime R. Cabrera-Pardo
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2019)
Article
Plant Sciences
Lubia M. Guedes, Narciso Aguilera, Bruno G. Ferreira, Sebastian Riquelme, Katia Saez-Carrillo, Jose Becerra, Claudia Perez, Evelyn Bustos, Rosy M. S. Isaias
JOURNAL OF PLANT RESEARCH
(2019)
Article
Biotechnology & Applied Microbiology
Fabian A. Figueroa, Roberto Abdala-Diaz, Victor Hernandez, Pablo Pedreros, Mario Aranda, Jaime R. Cabrera-Pardo, Claudia Perez, Jose Becerra, Roberto Urrutia
JOURNAL OF APPLIED PHYCOLOGY
(2020)
Article
Chemistry, Applied
Cristian Tapia, Barbara Lopez, Allisson Astuya, Jose Becerra, Concetta Gugliandolo, Boris Parra, Miguel Martinez
Summary: This study evaluated the antiproliferative activity of bacterial pigments from Deinococcus sp. UDEC-P1 and Arthrobacter sp. UDEC-A13 against cancer cells. The results showed that these pigments have significant viability reduction effects on certain cancer cells.
NATURAL PRODUCT RESEARCH
(2021)
Review
Pharmacology & Pharmacy
Jaime R. Cabrera-Pardo, Jorge Fuentealba, Javiera Gavilan, Daniel Cajas, Jose Becerra, Mariola Napiorkowska
FRONTIERS IN PHARMACOLOGY
(2020)
Article
Biochemistry & Molecular Biology
Ivan Gonzalez-Chavarria, Felix Duprat, Francisco J. Roa, Nery Jara, Jorge R. Toledo, Felipe Miranda, Jose Becerra, Alejandro Inostroza, Alexandra Kelling, Uwe Schilde, Matthias Heydenreich, Cristian Paz
Article
Agriculture, Multidisciplinary
Carolina Salazar, Felipe Landeros, Evelyn Bustos, Paulina Bravo, Claudia Perez, Jose Becerra, Darcy Rios, Matilde Uribe
CIENCIA E INVESTIGACION AGRARIA
(2019)
