Characterization, antioxidant and antiglycation properties of polysaccharides extracted from the medicinal halophyte Carpobrotus edulis L

Hafsa, Jawhar; Hammi, Khaoula Mkadmini; Cerf, Didier Le; Limem, Khalifa; Majdoub, Hatem; Charfeddine, Bassem

doi:10.1016/j.ijbiomac.2017.09.046

Cited by 31 publications

(15 citation statements)

References 41 publications

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“…The comparison of band characteristic of stretching vibration of OH groups on pectin-alginate and Ca-alginate for empty capsules show that this OH vibration is more intense when the pectin is added, probably because of hydrogen bonds formed between pectin and alginate (Belščak-Cvitanović et al, 2017) ( Figure 6). Furthermore, changes were observed in the carbohydrate fingerprint region (950-1250 cm −1 ) of the alginate-pectin spectrum, suggesting the presence of pectin galacturonic acid moieties (Hafsa et al, 2018).…”

Section: Physicochemical Characterization Of the Generated Capsulesmentioning

confidence: 99%

“…Moreover, pectin spectra present a weak peak at 2,920 cm −1 of C-H stretch of methyl groups, and an absorption band appearing at 1734 cm −1 was assigned to the stretching of ester carbonyl (C = O) groups (Hafsa et al, 2018) as characteristic vibrations. Furthermore, in the spectrum of papaya extract and gallic acid, similar to alginate bands from 3,000 cm −1 to 3,500 cm −1 can be assigned to the O-H stretching and hydrogen bonds being more significant the bands at 1698 and 1,241 cm −1 , which corresponds to the C = O and C-O of carboxyl groups, respectively, of the carboxyl group of gallic acid (Hu, Nie, Feng, & Suo, 2013), and for papaya extract the band at 1,055 cm −1 was assigned to the -C-O stretching of alcoholic groups, similar band have been reported in green tea, and P. sarmentosum extract (Belščak-Cvitanović et al, 2017;Chan et al, 2010).…”

Section: Physicochemical Characterization Of the Generated Capsulesmentioning

confidence: 99%

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Development of alginate‐pectin microcapsules by the extrusion for encapsulation and controlled release of polyphenols from papaya ( Carica papaya L.)

et al. 2020

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The papaya fruit (Carica papaya L.) contains a wide variety of bioactive compounds with potential applications in the food and nutraceutical industries. The entrapment and release of such bioactive compounds remain a critical step for the development of functional, stable, and cost‐effective storage and delivery systems, since the interaction of polymers on capsules and the payload molecules can influence the performance of the capsule system under operational conditions. The present study describes the encapsulation of rutin and trans‐ferulic acid‐rich extracts from papaya exocarp in a pectin‐alginate composite, evaluating the performance of gallic acid encapsulation obtained through in situ and two‐step entrapment methods. The best alginate:pectin ratio for gallic acid encapsulation was 55:45 and 61:39, achieving 6.1 mg and 28.1 mg GAE/g capsules when the papaya exocarp extract was encapsulated by in situ and two‐step, respectively. We also evaluated the payload release performance of the obtained capsules under in vitro conditions simulating gastrointestinal conditions. Our results indicate an increased protective effect at gastric pH and targeted release of polyphenols when in situ encapsulation is used to encapsulate the extracts. Practical applications Currently, adding value to agroindustry processing waste is an important focus to achieve a more economically and environmentally sustainable food industry. The recovery of bioactive molecules such as polyphenols, for food supplements or formulation additives in the form of by‐product extracts is gaining importance as novel sustainable processes in the agricultural industry. Thus, the encapsulation of such bioactive extracts for storage and consumption is an active research field, aiming to overcome the low storage stability and lability to gastric conditions, currently hindering their applications in food or pharmaceutical formulations. In this sense, capsule design and the development of efficient encapsulation methods are very important to obtain a suitable carrier and protector system for the capsulated bioactive extracts or molecules. This research aims to add value to papaya waste and potentially to other agroindustry wastes such as pectin and alginate, resulting in a polyphenol carrier with excellent encapsulation and targeted release properties under gastrointestinal conditions. In conclusion, this kind of works could allow to the application of the agroindustry byproducts to obtain high added‐value products, in the form of polyphenol‐loaded capsules.

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Section: Physicochemical Characterization Of the Generated Capsulesmentioning

confidence: 99%

Section: Physicochemical Characterization Of the Generated Capsulesmentioning

confidence: 99%

Development of alginate‐pectin microcapsules by the extrusion for encapsulation and controlled release of polyphenols from papaya ( Carica papaya L.)

et al. 2020

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“…The range and the distribution of molecular weight of the CSG‐1 were determined with SEC–LLS. The weight average molar mass ( M w ), number average molecular weight ( M n ), polydispersity ( M w / M n ), peak M w ( M p ), and z ‐average radius of gyration were 5.343 × 10 6 , 3.203 × 10 6 , 1.668, 8.911 × 10 6 , and 6.948 × 10 6 , respectively [29]. Figure 7 illustrates the SEC–LLS chromatogram of CSG‐1.…”

Section: Resultsmentioning

confidence: 99%

Extraction, purification, characterization, and rheological properties of a glycoprotein from Cynomorium songaricum Rupr

Shi

Guo

et al. 2020

Biotech and App Biochem

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Cynomorium songaricum Rupr is widely known in China as a traditional herbal medicine. In this study, single‐factor experiments and response surface methodology were used to optimize the extraction of Cynomorium songaricum Rupr glycoprotein (CSG). The results show that a maximum glycoprotein yield of 6.39 ± 0.32% was achieved at a ratio of solid to liquid 32:1 for 4.2 H at 52 °C. Then, the IR, monosaccharide composition, amino acid composition, type of glycopeptide linkage, and average molecular weight of CSG‐1 purified from CSG were characterized. The results indicate that CSG‐1 presented the characteristic absorption peak of polysaccharide and protein, including four monosaccharides and 17 amino acids, had O‐linked glycopeptide bonds, Mw, Wn, Mw/Mn, Mp, and the z‐average were 5.343 × 106, 3.203 × 106, 1.668, 8.911 × 106, and 6.948 × 106, respectively. Besides, CSG‐1 solution was described by the Herschel–Bulkley model and it behaved as a shear‐thinning fluid. Also, under a frequency sweep the moduli G′ and G″ both increased with increasing CSG‐1 concentration and the CSG‐1 dispersions had weak thermal stability over the temperature sweep. These results provide a scientific basis for the further study of Cynomorium songaricum Rupr.

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“…Three-dimensional response surfaces and two-dimensional contour plots were used to visualize the regression equations [19]. The 3D response surface explains the relationship between the dependent variables and the interaction between two test variables when the other factors are kept constant at a zero level [20].…”

Section: Response Surface Analysismentioning

confidence: 99%

Physicochemical and Antioxidant Properties of Potentilla anserina L. Polysaccharides Affected by Ultrasonication

2020

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The effects of ultrasonic treatment on the physicochemical and antioxidant properties of Potentilla anserina L. polysaccharides (PAPs) were investigated. A Box–Behnken design (BBD) was applied to optimize the parameters of ultrasound-assisted extraction (UAE). A maximum yield of 9.43% was achieved at an extraction temperature of 66 °C, ultrasonic power of 205 W, and extraction time of 2.6 h. The chemical structure analyses illustrated that the two PAP extracts using UAE and hot water extraction (HWE) had the same monosaccharide composition but displayed a significant difference in the monosaccharide content, and the molecular weight of PAPUAE was significantly lower than PAPHWE. Fourier-transform infrared (FT-IR) spectroscopy confirmed that the ultrasonic treatment did not change the type of glycosidic bonds compared with HWE. In addition, the results from thermogravimetric analysis indicated that different extraction methods had effects on the physical properties of PAPs to some degree. Antioxidant activity assays demonstrated that PAPUAE had higher superoxide dismutase and glutathione peroxidase activities when cells were exposed to exogenous H2O2 than PAPHWE, and the malondialdehyde levels were also lowered following exposure to PAPUAE. These findings indicated that ultrasound irradiation is a promising technique for polysaccharide extraction from plant materials.

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Characterization, antioxidant and antiglycation properties of polysaccharides extracted from the medicinal halophyte Carpobrotus edulis L

Cited by 31 publications

References 41 publications

Development of alginate‐pectin microcapsules by the extrusion for encapsulation and controlled release of polyphenols from papaya ( Carica papaya L.)

Development of alginate‐pectin microcapsules by the extrusion for encapsulation and controlled release of polyphenols from papaya ( Carica papaya L.)

Extraction, purification, characterization, and rheological properties of a glycoprotein from Cynomorium songaricum Rupr

Physicochemical and Antioxidant Properties of Potentilla anserina L. Polysaccharides Affected by Ultrasonication

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