Evaluation of the effects of sugarcane molasses as a carbon source for Ankistrodesmus gracilis and Haematococcus pluvialis (Chlorophyceae)

Sipaúba-Tavares, Lúcia Helena; Tedesque, Mayara Galatti; Scardoeli-Truzzi, Bruno

doi:10.1590/1519-6984.216820

Cited by 9 publications

(5 citation statements)

References 15 publications

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“…It has been known to mankind since prehistory due to the production of sugar and now it is an important economic crop cultivated in several countries including Pakistan (James, 2008;Figueroa-Rodriguez et al, 2019). Moreover, sugarcane is one of the most important commercial crops that gives essential by products such as sugar, ethanol, molasses, and bagasse (Sipaúba-Tavares et al, 2020). According to the UNFAO, the world's top 10 sugarcane producing countries includes Brazil, India followed by China, Thailand, Pakistan, Mexico, Colombia, Indonesia, Philippines, and United State (Sabiha-Hanim and Halim, 2018).…”

Section: Introductionmentioning

confidence: 99%

Expression analysis of transcription factors in sugarcane during cold stress

et al. 2023

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Transcription factors (TF) are a wide class of genes in plants, and these can regulate the expression of other genes in response to various environmental stresses (biotic and abiotic). In the current study, transcription factor activity in sugarcane was examined during cold stress. Initially, RNA transcript reads of two sugarcane cultivars (ROC22 and GT08-1108) under cold stress were downloaded from SRA NCBI database. The reads were aligned into a reference genome and the differential expression analyses were performed with the R/Bioconductor edgeR package. Based on our analyses in the ROC22 cultivar, 963 TF genes were significantly upregulated under cold stress among a total of 5649 upregulated genes, while 293 TF genes were downregulated among a total of 3,289 downregulated genes. In the GT08-1108 cultivar, 974 TF genes were identified among 5,649 upregulated genes and 283 TF genes were found among 3,289 downregulated genes. Most transcription factors were annotated with GO categories related to protein binding, transcription factor binding, DNA-sequence-specific binding, transcription factor complex, transcription factor activity in RNA polymerase II, the activity of nucleic acid binding transcription factor, transcription corepressor activity, sequence-specific regulatory region, the activity of transcription factor of RNA polymerase II, transcription factor cofactor activity, transcription factor activity from plastid promoter, transcription factor activity from RNA polymerase I promoter, polymerase II and RNA polymerase III. The findings of above results will help to identify differentially expressed transcription factors during cold stress. It also provides a comprehensive analysis of the regulation of the transcription activity of many genes. Therefore, this study provides the molecular basis for improving cold tolerance in sugarcane and other economically important grasses.

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Section: Introductionmentioning

confidence: 99%

Expression analysis of transcription factors in sugarcane during cold stress

et al. 2023

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“…Microalgae grow heterotrophically when they consume organic molecules such as glucose or acetate as their primary source of nutrition [40], and no light is used during cultivation [34]. Additionally, heterotrophic cultivation has received much interest recently as a result of its high cell density and high rate of biomass production [41]. Furthermore, in comparison to photoautotrophic systems, heterotrophic cultivation can achieve more consistent and predictable biomass productivity due to the consistent availability of the energy source in the form of organic carbon uptake [42].…”

Section: Cultivation Of H Lacustrismentioning

confidence: 99%

“…Thus, using a two-stage cultivation method that included perfusion culture during the vegetative stage and stepwise light irradiation during the induction stage, the mixotrophic culture system produced high-density biomass (2.47 g L −1 ), which was 3.09 and 1.67 times greater than batch and fed-batch processes, respectively [42]. Moreover, Sipaúba-Tavaresa et al [41] reported that high cell density increased from 0.4 × 10 5 cells mL −1 to 1.7 × 10 5 cells mL −1 during exponential growth from day 1 to day 10 under mixotrophic cultivation in H. lacustris when using E. crassipes culture medium.…”

Section: Cultivation Of H Lacustrismentioning

confidence: 99%

“…Additionally, glucose containing approximately 2.8 KJ mol −1 and acetate contains only 0.8 KJ mol −1 when used as a carbon source in the cultivation of microalgae, whereas glucose contains more energy than any other carbon source [19,52]. For example, the low-cost carbon source sugarcane molasses can be utilized to grow microalgae [41]. Molasses comprises roughly 50% total sugars, with sucrose making up the vast bulk [53].…”

Section: Different Types Of Nutrientsmentioning

confidence: 99%

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Bioprocess Strategy of Haematococcus lacustris for Biomass and Astaxanthin Production Keys to Commercialization: Perspective and Future Direction

Oslan

Mohamad

et al. 2022

Fermentation

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Haematococcus lacustris (formerly called Haematococcus pluvialis) is regarded as the most promising microalgae for the production of natural astaxanthin, which is secondary metabolism used as a dietary supplement, also for cosmetic applications, due to its high anti-oxidant activity. Astaxanthin has a wide range of biological activities and high economic potential, and currently dominates the market in its synthetic form. Furthermore, because of the difficulty of bioprocess and the high cost of cultivation, astaxanthin extracted from this microalga is still expensive due to its low biomass and pigment productivities. Large-scale biomass production in biotechnological production necessitates the processing of a large number of cultures as well as the use of both indoor and outdoor systems, such as open pond raceway systems and photo-bioreactors (PBR). The photo-bioreactors systems are suitable for mass production because growth conditions can be controlled, and the risk of contamination can be reduced to a certain extent and under specific culture parameters. This review discusses current technologies being developed to improve cultivation and operation efficiency and profitability, as well as the effect of parameter factors associated with H. lacustris cultivation on biomass and astaxanthin bioproduction, and even strategies for increasing bioproduction and market potential for H. lacustris astaxanthin.

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“…Carbon source is one of the most cost-effective factors in the production of biomasses and pigments [26]. The replacement of basic carbon sources of media (NaHCO3) with cost-effective materials such as glucose and molasses has previously been reported in the cultivation of Spirulina platensis [27][28][29]. Since, there were no published works on the impacts of sugarcane molasses on the cultivation of Arthrospira maxima, the current research was conduct on this area.…”

Section: Introductionmentioning

confidence: 99%

Sugarcane Molasses as a Cost-effective Carbon Source on Arthrospira maxima Growth by Taguchi Technique

2022

IJE

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In this research, a new cost-effective carbon source of medium was provided in terms of high-efficiency growth from Arthrospira maxima. Sugarcane molasses was used in two different modes (alternative and additive) at four different concentrations (0, 0.5, 1.0 and 1.5 gL -1 ) to determine the effect of new carbon source versus its standard carbon source of Zarrouk's medium (NaHCO3). The experimental results were analyzed by Taguchi L8 method as a statistical technique. The highest biomass production obtained when sugarcane molasses was added as an alternative source, which was 5.31 times higher than the usual Zarrouk's media. Furthermore, final biomass concentration increased with increasing molasses concentration from 0 to 1.5 gL -1 in this group. At highest concentration, phycocyanin (at 0.11 and 0.12 gL -1 ), allophycocyanin (at 0.13 and 0.12 gL -1 ), carotenoids (at 2340 and 2535 mgL -1 ), chlorophyll a (at 23.83 and 24.83 mgL -1 ), and chlorophyll b (at 0.343 and 2.99 mgL -1 ) obtained when molasses were added as an additive and alternative sources, respectively. Finally, the replacement of standard carbon sources of medium with sugarcane molasses had the potential possibility in order to reduce the production costs of Arthrospira maxima growth.

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Evaluation of the effects of sugarcane molasses as a carbon source for Ankistrodesmus gracilis and Haematococcus pluvialis (Chlorophyceae)

Cited by 9 publications

References 15 publications

Expression analysis of transcription factors in sugarcane during cold stress

Expression analysis of transcription factors in sugarcane during cold stress

Bioprocess Strategy of Haematococcus lacustris for Biomass and Astaxanthin Production Keys to Commercialization: Perspective and Future Direction

Sugarcane Molasses as a Cost-effective Carbon Source on Arthrospira maxima Growth by Taguchi Technique

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