Enhancing production of lutein by a mixotrophic cultivation system using microalga Scenedesmus obliquus CWL-1

2019 ◽  
Vol 291 ◽  
pp. 121891 ◽  
Author(s):  
Wei-Chuan Chen ◽  
Yin-Che Hsu ◽  
Jo-Shu Chang ◽  
Shih-Hsin Ho ◽  
Li-Fen Wang ◽  
...  
2014 ◽  
Vol 5 ◽  
pp. 241-248 ◽  
Author(s):  
Jean-Michel Girard ◽  
Marie-Laine Roy ◽  
Mhammed Ben Hafsa ◽  
Jonathan Gagnon ◽  
Nathalie Faucheux ◽  
...  

Molecules ◽  
2021 ◽  
Vol 26 (24) ◽  
pp. 7613
Author(s):  
Parichat Phalanisong ◽  
Pensri Plangklang ◽  
Alissara Reungsang

Microalgae consortia were photoautotrophically cultivated in sequencing batch photobioreactors (SBPRs) with an alteration of the normal growth and starvation (nutrient limitation) phases to select consortia capable of polyhydroxyalkanoate (PHA) accumulation. At the steady state of SBPR operation, the obtained microalgae consortia, selected under nitrogen and phosphate limitation, accumulated up to 11.38% and 10.24% of PHA in their biomass, which was identified as poly(3-hydroxybutyrate) (P3HB). Photoautotrophic and mixotrophic batch cultivation of the selected microalgae consortia was conducted to investigate the potential of biomass and PHA production. Sugar source supplementation enhanced the biomass and PHA production, with the highest PHA contents of 10.94 and 6.2%, and cumulative PHA productions of 100 and 130 mg/L, with this being achieved with sugarcane juice under nitrogen and phosphate limitation, respectively. The analysis of other macromolecules during batch cultivation indicated a high content of carbohydrates and lipids under nitrogen limitation, while higher protein contents were detected under phosphate limitation. These results recommended the selected microalgae consortia as potential tools for PHA and bioresource production. The mixed-culture non-sterile cultivation system developed in this study provides valuable information for large-scale microalgal PHA production process development following the biorefinery concept.


2018 ◽  
Vol 9 (04) ◽  
pp. 20213-20217
Author(s):  
Dr. Ir. Ni.Gst.Ag.Gde Eka Martiningsih ◽  
Dr.Ir. I Putu Sujana, MS

Introduction of organic rice-based rice cultivation technology package through demplot is done in Subak Sungi 1 using ciherang variety. The number of farmers participating in demonstration plots in organic cultivation of paddy-based rice cultivation were 5 people, with age of farmers aged greater than 55 years occupying the highest percentage (45.45%), with elementary education level (72.75%), followed by high school education (18.25%), and junior high (9%). The average farmland area is 34.63 acres, with self-owned status (55,94%), status as penyakap 41,18% and rent status 2,88%. The farmers' response to the organic rice-based rice planting assessment is quite high, as evidenced by the evaluation that 100% of farmers participating in demonstration plots know and understand about organic rice system cultivation, and they agree to develop this cultivation system in the future. Demplot research results can increase the yield components and weight of dry grain harvest per hectare. Organic rice-based rice cultivation technology EVAGRO able to increase production of dry grain harvest significantly with a value of 6.8 tons / ha. There is a tendency of dry weight value of ciherang varieties of 6.8 tons / ha giving highest but not significantly different with PGPR organic based technology.


2009 ◽  
Vol 33 (4) ◽  
pp. 696-701
Author(s):  
Jian-Min MA ◽  
Lin-Lin CAI ◽  
Ling-Wei HU ◽  
Tong-Xia JIN ◽  
Xiao-Yu LI ◽  
...  

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