Use of green chemistry methods in the extraction of dietary fibers from cactus rackets (Opuntia ficus indica): Structural and microstructural studies

Rouhou, Marwa Cheikh; Abdelmoumen, Souhir; Thomas, Sabu; Attia, Hamadi; Ghorbel, Dorra

doi:10.1016/j.ijbiomac.2018.05.090

Cited by 70 publications

(25 citation statements)

References 36 publications

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“…As well, with reference to the lyophilized pads powder, Hernández-Urbiola et al [ 42 ] revealed that, this latter contained 58.5 mg/g of proteins. Table 3 depicts also that both cactus powdered formulations; LP and DP show some amount of klason lignin, in agreement with a previous report where other authors have found 2.5% of lignin in cactus cladodes powder dried at 40 °C for 4 days [ 43 ].…”

Section: Resultssupporting

confidence: 91%

“…The recorded bands are mainly: a broad band with a maximum around 3355 cm −1 that can be associated to stretching vibrations of hydroxyl (–OH) groups of carbohydrates and N–H groups of glycoproteins with a high degree of intra- and inter-molecular hydrogen bonding; a band at 2931 cm −1 attributed to C–H stretching vibration; bands at 1623 and 1425 cm −1 attributed, respectively, to asymmetric and symmetric stretching vibrations of ionized carboxylic acid groups (COO − ), namely from polygalacturonic acid; a shoulder at around 1730 cm −1 from C=O stretching of non-ionized COOH groups and substituent methyl ester groups in polygalacturonic acid; a band with maximum at 1046 cm −1 mainly due to the C–O stretching of alcohol/ether groups in the carbohydrates [ 47 ]. On the other hand, and as presented in Figure 2 , it is worthy to point out a slight decrease in the DP peaks intensity in the range of 2930 to 655 cm −1 which can be associated to a thermal dehydration effect [ 43 ].…”

Section: Resultsmentioning

confidence: 99%

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Characterization of Two Cactus Formulation-Based Flocculants and Investigation on Their Flocculating Ability for Cationic and Anionic Dyes Removal

et al. 2020

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Dye invasion in wastewaters is undeniably one of the crucial environmental concerns in addition to the supplement of toxic synthetic chemical flocculants used for color removal using the conventional coagulation-flocculation process. With the aim to improve the flocculation stage in terms of reagents safety and ensure dyes removal, the present study explores the flocculating effectiveness of two natural, stable, and eco-friendly cactus formulations, namely 60 °C oven-dried (DP) and lyophilized (LP) cladodes. Both formulations were assessed to treat cationic (Methylene blue; MB) and anionic (Methyl Orange; MO) dye solutions as a substitution attempt for the currently questioned employed synthetic chemical flocculants. Obtained results demonstrate that, in conjunction with alum as coagulant, the lyophilized powder (LP) bio-based flocculant appears to be the most efficient cactus formulation, showing a significant color (83%) and a turbidity (69%) abatement for the cationic dye (MB) and, respectively, 63% and 62% for the anionic one (MO). Additionally, the flocculation activity of the LP formula remained high over an eight-month period of storage. Moreover, based on the Fourier transform infrared (FTIR) spectroscopic analysis and the chemical characterization of cactus formulations, the occurring flocculation mechanisms of the dye removal are presumed to be based on both adsorption and bridging phenomena. Further, the significant color and turbidity decline achieved upon the addition of the lyophilized cactus cladodes powder (LP), enhancing thus the coagulation performance of the alum-based coagulant, proved the effectiveness of this bio-flocculant compared to the commonly used chemical flocculant (polyacrylamide). Hence, it was suggested that lyophilized cactus cladodes as a natural flocculant could be one of the effective surrogates to chemical flocculants conventionally used in wastewater treatment for the sake of a safer and sustainable environment.

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Characterization of Two Cactus Formulation-Based Flocculants and Investigation on Their Flocculating Ability for Cationic and Anionic Dyes Removal

et al. 2020

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“…However, the total monosaccharide content of EUF was significantly lower than those of PF, UTF and EHF. During the treatment to prepare EUF, the possible reason was that the hydrogen bonds between lignin and hemicellulose were destroyed by ultrasound (Cheikh Rouhou et al , ). With the subsequent addition of the complex enzymes, the SDF chains were hydrolysed into low‐molecular‐weight fragments, some of which were easily lost during the filtration and washing processes, thus decreasing the DF content (Moczkowska et al , ).…”

Section: Resultsmentioning

confidence: 99%

“…a). The peak at 3411.96 cm −1 corresponds to the stretching of hydroxyl groups, which may be caused by the hydrogen bonds of cellulose and hemicellulose (Cheikh Rouhou et al , ). The peak at 2926.15 cm −1 corresponds to a characteristic hydrocarbon vibration of cellulose.…”

Section: Resultsmentioning

confidence: 99%

Microstructure characteristics of tea seed dietary fibre and its effect on cholesterol, glucose and nitrite ion adsorption capacities in vitro: a comparison study among different modifications

Zhang

Cao

et al. 2019

Int J of Food Sci Tech

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Summary The effects of xylanase–cellulase hydrolysis, ultrasonic modification and enzymatic‐ultrasonic treatment on the physicochemical properties, morphological structures and adsorption capacities in vitro of purified fibre (PF) from tea seed were determined. The results showed the ultrasonically treated fibre (UTF) had a higher water‐holding capacity (60.15 g g−1), oil‐binding capacity (30.42 g g−1), swelling capacity (29.93 mL g−1), emulsification activity (381.36 m2 g−1) and emulsification stability (20.20) than PF, enzymatically hydrolysed fibre (EHF) and enzymatic‐ultrasonic treated fibre (EUF). The structures of PF, UTF, EHF and EUF were characterised by scanning electron microscope, Laser particle size analyzer, X‐ray diffraction, thermogravimetric analysis and Fourier transform infrared spectra. Furthermore, compared with PF, the adsorption capacity of UTF, EHF and EUF for cholesterol, glucose and nitrite ions during simulative gastrointestinal tract was improved to different degrees. This study can provide guidance for the comprehensive utilisation of byproduct of tea seed and designing novel functional dietary fibre.

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“…The occurrence of a more defined and individualized fibers in the cellulose extracted from Opuntia ficus-indica L. Miller can be attributed to the chemical and structural changes induced after chemical treatment of holocellulose, which are further evidenced by FTIR and XRD. According to Rouhou et al [32] such modifications in the surface topography may be a result of the extraction and purification processes used to obtain the final product.…”

Section: Resultsmentioning

confidence: 99%

Opuntia Ficus-Indica L. Miller (Palma Forrageira) as an Alternative Source of Cellulose for Production of Pharmaceutical Dosage Forms and Biomaterials: Extraction and Characterization

et al. 2019

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Cellulose is among the top 5 excipients used in the pharmaceutical industry. It has been considered one of the main diluents used in conventional and modern dosage forms. Therefore, different raw materials of plant origin have been evaluated as potential alternative sources of cellulose. In this context, Opuntia ficus-indica L. Miller (palma forrageira), a plant of the cactus family that has physiological mechanisms that provide greater productivity with reduced water requirements, is an interesting and unexplored alternative for extracting cellulose. By using this source, we aim to decrease the extraction stages and increase the yields, which might result in a decreased cost for the industry and consequently for the consumer. The aim of this work was to investigate the use of Opuntia ficus-indica L. Miller as a new source for cellulose extraction, therefore providing an efficient, straight forward and low-cost method of cellulose II production. The extraction method is based on the oxidation of the lignins. The obtained cellulose was identified and characterized by spectroscopic methods (FTIR and NMR), X-ray diffraction, thermal analysis (TGA-DTG and DSC) and scanning electron microscopy. The results confirmed the identity of cellulose and its fibrous nature, which are promising characteristics for its use in the industry and a reasonable substrate for chemical modifications for the synthesis of cellulose II derivatives with different physicochemical properties that might be used in the production of drug delivery systems and biomaterials.

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Use of green chemistry methods in the extraction of dietary fibers from cactus rackets (Opuntia ficus indica): Structural and microstructural studies

Cited by 70 publications

References 36 publications

Characterization of Two Cactus Formulation-Based Flocculants and Investigation on Their Flocculating Ability for Cationic and Anionic Dyes Removal

Characterization of Two Cactus Formulation-Based Flocculants and Investigation on Their Flocculating Ability for Cationic and Anionic Dyes Removal

Microstructure characteristics of tea seed dietary fibre and its effect on cholesterol, glucose and nitrite ion adsorption capacities in vitro: a comparison study among different modifications

Opuntia Ficus-Indica L. Miller (Palma Forrageira) as an Alternative Source of Cellulose for Production of Pharmaceutical Dosage Forms and Biomaterials: Extraction and Characterization

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