Assessment of the effect of autohydrolysis treatment in banana’s pseudostem pulp

Díaz, Sara; Ortega, Zaida; Benítez, Antonio N.; Costa, Diogo Paes da; Carvalheiro, Florbela; Fernandes, Maria C.; Duarte, Luís C.

doi:10.1016/j.wasman.2020.09.034

Cited by 25 publications

(13 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Three different by-products coming from banana crop were used as the raw materials for the present study: banana's pseudostem pulp (BPP), rachis, and discarded green banana. For the obtention of BPP, pseudostems from Musa acuminata Dwarf Cavendish (Gran Enana cultivar) randomly collected from an agro-industrial plantation in Arguineguín were processed as described in [28]. In addition to the fiber, another by-product is generated in this process, banana's pseudostem pulp (BPP), one of the raw material for this study.…”

Section: Feedstocksmentioning

confidence: 99%

“…The main objective of this study is to optimize the extraction of natural antioxidants from three wastes coming from banana crops: rachis, discarded bananas, and banana's pseudostem pulp (a by-product obtained in the mechanical fiber extraction of the pseudostem [28]). These three by-products have been studied separately as they are very different in purpose in the plant, and thus in composition, and the optimization of compound extraction must be done individually.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimization of banana crop by-products solvent extraction for the production of bioactive compounds

Díaz

Benítez

Ramírez-Bolaños

et al. 2021

Biomass Conv. Bioref.

Self Cite

View full text Add to dashboard Cite

The aim of this work is the optimization of phenolic compound extraction from three by-products of banana crops (rachis, discarded banana, and banana’s pseudostem pulp), as a way to valorize them through a green extraction process. The influence of the temperature and aqueous ethanol concentration (Et-OH) on extract properties (total phenol content (TPC) and antioxidant activity) was firstly analyzed. 78 ℃ and ethanol concentrations close to 50% yielded the best results for the three materials. The equations obtained by the response surface methodology gave a satisfactory description of the experimental data, allowing optimizing the extraction conditions. Under optimized conditions, time influence was then assessed, although this parameter seemed not influence results. Among the three by-products, rachis extract (60% Et-OH, 78 ℃, and 30 min) presented the highest TPC (796 mg gallic acid/100 g of dried material) and antioxidant activity (6.51 mg Trolox equivalents/g of dried material), followed by discarded banana, and pseudostem pulp. Under the optimal conditions, experiments were performed at a larger scale, allowing to determine the extraction yields (EY) and to characterize the extracts. The highest EY was obtained for the rachis (26%), but the extract with the highest activity was obtained for discarded banana (50% Et-OH, 78 ℃, and 60 min), which presented a TPC of 27.26 mg/g extract corresponding to 54.59 mg Trolox equivalents/g extract. This study contributes to the valorization of banana crops residues as a source of polyphenolic compounds with bioactive functions that can be extracted under economic extraction conditions. Graphical abstract

show abstract

Section: Feedstocksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of banana crop by-products solvent extraction for the production of bioactive compounds

Díaz

Benítez

Ramírez-Bolaños

et al. 2021

Biomass Conv. Bioref.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Pseudostems were subjected to mechanical fiber extraction using a pilot plant available at the University of Las Palmas de Gran Canaria. Banana's pseudostem pulp (BPP) obtained from fiber extraction, which was the raw material for this study, was characterized in a previous work [3], and its composition is given in Table 1.…”

Section: Feedstock and Pre-treated Biomassmentioning

confidence: 99%

“…A fraction was milled with a knife mill (Fritsch Industriestr, Germany) Table 1 Chemical composition (% w/w in dry base) of banana's pseudostem pulp (BPP) and solid fractions obtained after the autohydrolysis of BPP at 150 °C (P150) and 170 °C (P170) [3] *Evaluated according to NREL/TP-510-42,629 protocol [3] Component (% w/w in dry base) BPP P150 logR 0 = 2. to particles smaller than 6 mm for autohydrolysis, and the other part was ground in an Ultra Centrifugal Mill ZM200 (Retsch, Germany) to particles smaller than 0.5 mm, for EH. Autohydrolysis pre-treatment was performed as indicated in [3] with two final temperatures, 150 °C and 170 °C, under non-isothermal conditions, using a solid/liquid rate of 1/11. The obtained solids were washed with twice the amount of water, pressed again, and then dried at 40 °C for their use in the EH (denoted as P150 and P170).…”

Section: Feedstock and Pre-treated Biomassmentioning

confidence: 99%

“…So, in order to improve the overall valorization of the banana plants, it is necessary to find other uses for this material. The chemical characterization of banana's pseudostem pulp (BPP) has been demonstrated to have an interesting composition for developing a biorefinery's biochemical platform, due to its high polysaccharides content (above 60%) and low Klason lignin content [3]. Also in this work, the autohydrolysis pre-treatment was successfully applied to BPP, producing a high concentration of oligosaccharides (OS) and a residual solid with improved characteristics for enzymatic hydrolysis (EH).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Oligosaccharides production by enzymatic hydrolysis of banana pseudostem pulp

Díaz

Ortega

Benítez

et al. 2021

Biomass Conv. Bioref.

Self Cite

View full text Add to dashboard Cite

Banana production generates significant amounts of agricultural wastes, being fiber extraction one of the most relevant alternatives for their valorization. This process produces banana’s pseudostem pulp (BPP) as a byproduct, which shows an interesting composition for the biorefinery’s biochemical platform, with high polysaccharides (68%) and low lignin contents. This work deals with the enzymatic hydrolysis (EH) of raw and hydrothermally pre-treated BPP, focusing on the production of oligosaccharides (OS). Raw BPP hydrolysis with cellulase at different dosages rendered only 3.2% OS yields (OSY). Pectinase addition has not affected EH performance. On the other hand, EH of hydrothermally pre-treated BPP at 150 °C and 170 °C (P150 and P170) allowed to increase OSY up to 28% (P150, 1 FPU of cellulase/g dry biomass, 12 h), being 72% of the solubilized sugars in the form of cello-oligosaccharides. This last condition was subjected to a multi-stage EH strategy without improvements in OSY. An endo-glucanase was also tested, but obtained OSY were lower than cellulase results. Finally, obtained OS demonstrated to stimulate the growth of two Lactobacilli strains. The results show that BPP pre-treated under mild operational conditions is a good candidate for cello-oligosaccharides production by EH using 1 FPU/g DB of cellulase with a simple strategy. Graphical abstract

show abstract

Synthesis of Xylo‐oligosaccharide from D‐xylose by Catalyst of Oxalate Acid

et al. 2022

View full text Add to dashboard Cite

Xylo‐oligosaccharide (XOS) can stimulate the growth of Bifidobacterium, it is widely used in functional food, nutritional products and other aspects. At present, XOS is mainly prepared by hydrolysis of the hemicellulose in plant materials by enzyme catalyzing, resulting the high cost. In order to find an efficient method to reduce the cost, XOS was prepared by synthesis from D‐xylose through oxalate acid catalyzing in this paper, getting the results as following: a light‐yellow product of XOS was obtained with the max yield of 53.75±3.48 %. Its molecular weight is in the range of 459–1306 g/mol, being oligomers contain 3–9 units of D‐xylose units. In addition, the XOS contains both of the basic units of α‐D‐xylose and β‐D‐xylose, mainly connected by both α1‐β4 and β1‐α4 glycosidic bonds. Therefore, this study develops a new method of XOS generation, doing benefit to the high value‐added utilization of xylose.

show abstract

Assessment of the effect of autohydrolysis treatment in banana’s pseudostem pulp

Cited by 25 publications

References 51 publications

Optimization of banana crop by-products solvent extraction for the production of bioactive compounds

Optimization of banana crop by-products solvent extraction for the production of bioactive compounds

Oligosaccharides production by enzymatic hydrolysis of banana pseudostem pulp

Synthesis of Xylo‐oligosaccharide from D‐xylose by Catalyst of Oxalate Acid

Contact Info

Product

Resources

About