Effect of Processing on the Bioactive Polysaccharides and Phenolic Compounds from<i>Aloe vera</i>(<i>Aloe barbadensis</i>Miller)

Minjares‐Fuentes, José Rafael; Femenia, Antoni

doi:10.1002/9781119138105.ch9

Cited by 8 publications

(7 citation statements)

References 125 publications

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“…1b). This darkening of A. vera gel has been reported by other authors; this change has been attributed to nonenzyme-related darkening reactions during thermal pasteurization (Minjares-Fuentes and Femenia, 2017).…”

Section: Color Parameterssupporting

confidence: 85%

“…The high TS content compared with the RS content confirms that complex sugars or polysaccharides with a high molecular weight are the main component of the solids in A. vera gel (Minjares-Fuentes and Femenia, 2017). The absorption coefficient of the 10% A. vera gel blend was low (0.493 cm −1 ), while the turbidity value was 21.50 ± 0.91 NTU indicating a relatively low suspended solids content.…”

Section: Physicochemical Characterization Of the Aloe Vera Gelmentioning

confidence: 73%

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MICROBIAL AND PHYSICOCHEMICAL PROPERTIES OF UV-C PROCESSED Aloe vera GEL BLENDS AT DIFFERENT pHs USING A CONTINUOUS FLOW UV SYSTEM

Rodríguez‐Rodríguez¹,

Quintero‐Ramos²,

Meléndez‐Pizarro³

et al. 2019

Rev.Mex.Ing.Quim.

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Section: Color Parameterssupporting

confidence: 85%

Section: Physicochemical Characterization Of the Aloe Vera Gelmentioning

confidence: 73%

MICROBIAL AND PHYSICOCHEMICAL PROPERTIES OF UV-C PROCESSED Aloe vera GEL BLENDS AT DIFFERENT pHs USING A CONTINUOUS FLOW UV SYSTEM

Rodríguez‐Rodríguez¹,

Quintero‐Ramos²,

Meléndez‐Pizarro³

et al. 2019

Rev.Mex.Ing.Quim.

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“…To approximate the molecular model for the dry AV mucilage, an isolated structure of acemannan was built considering the type and disposition of the glycosidic bonds reported for this polysaccharide [ 30 ]. In particular, the base structure chosen for building this model corresponded to the carrisyn (acemannan) molecule (MF: C 66 H 100 NO 49 , MW: 1691.5 g/mol), as reported in the PubChem database under the compound CID number 72041 [ 45 ].…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, the mucilage extracted from the hydroparenchyma of the succulent leaves of aloe vera is a biopolymer mainly constituted by acemannan and pectic substances [ 28 ]. The acemannan polysaccharide, with a molecular weight of around 40–50 kDa, contains partially acetylated mannose units (>60%), glucose (∼20%), and galactose (<10%) [ 29 , 30 ]. Previous studies have shown that the AV mucilage is considered a rich source in dietary fiber (35.5%) [ 28 ] as well as a potent antioxidant due to its aloe-emodin content [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

Extraction and Physicochemical Characterization of Dried Powder Mucilage from Opuntia ficus-indica Cladodes and Aloe Vera Leaves: A Comparative Study

2021

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Cactaceae and Asphodelaceae are native desert plants known for their high mucilage content, which is a polysaccharide of growing interest in the food, cosmetic, and pharmaceutical industries. In this study, powdered mucilage was obtained from cladodes of Opuntia ficus-indica (OFI) and aloe vera (AV) leaves, and their molecular, morphological, and thermal properties were investigated and compared. Additionally, their dietary fiber content was determined. Three-dimensional molecular models were calculated for both mucilages using ab initio methods. Vibrational spectra (FTIR and Raman) revealed intramolecular interactions and functional groups that were specified with the help of theoretical ab initio and semi-empirical calculations. SEM micrographs measured at magnifications of 500× and 2000× demonstrated significantly different superficial and internal morphologies between these two mucilages. Thermal analysis using DSC/TGA demonstrated superior thermal stability for the OFI mucilage. The dietary fiber content in OFI mucilage was more than double that of AV mucilage. Our results show that both dehydrated mucilages present adequate thermal and nutritional properties to be used as functional ingredients in industrial formulations; however, OFI mucilage exhibited better physicochemical and functional characteristics than AV mucilage as a raw material.

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“…Rodríguez-Rodríguez et al [ 8 ] determined that UV-C doses > 24.2 mJ/cm 2 increased the glucose content in the 10% A. vera gel, which was attributed to the irradiation-induced hydrolysis of oligo and polysaccharides (acemannan) contained in the A. vera gel. Moreover, Minjares-Fuentes and Femenia [ 49 ] related the glucose increase to acemannan degradation. Likewise, increases in glucose and fructose in apple juice at UV-C irradiation > 40 mJ/cm 2 were reported by Islam et al [ 50 ].…”

Section: Resultsmentioning

confidence: 99%

Continuous Flow UV-C Irradiation Effects on the Physicochemical Properties of Aloe vera Gel and Pitaya (Stenocereus spp.) Blend

Meléndez‐Pizarro

Calva-Quintana

Espinoza‐Hicks

et al. 2020

Foods

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Physicochemical properties of a blend of 10% Aloe vera gel with 5% pitaya juice subjected to UV-C doses of 16.5, 27.7, and 40 mJ/cm2 were evaluated at pH 3.5 and 5.5. Unprocessed treatments were used as the control. The a* color parameter decreased and luminosity increased at pH 3.5. The decrease in the reddish color was consistent with the decrease in total betalains content and stabilized at pH 5.5. The NMR analyses of UV-C treatments showed changes in betalains signal patterns. Polyphenolics content was significantly reduced in the UV-C treatments at pH 5.5. UV-C processing decreased the antioxidant activity 1.25 times compared to unprocessed treatments. Total sugar content was reduced as the UV-C dose increased. Doses above 16.5 mJ/cm2 resulted in a higher simple sugar content at a pH 3.5. The UV-C continuous flow technology can be applied to stabilize betalains in Aloe vera–pitaya blends at a UV-C dose of 16.5 mJ/cm2 and pH 5.5.

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Effect of Processing on the Bioactive Polysaccharides and Phenolic Compounds fromAloe vera(Aloe barbadensisMiller)

Cited by 8 publications

References 125 publications

MICROBIAL AND PHYSICOCHEMICAL PROPERTIES OF UV-C PROCESSED Aloe vera GEL BLENDS AT DIFFERENT pHs USING A CONTINUOUS FLOW UV SYSTEM

MICROBIAL AND PHYSICOCHEMICAL PROPERTIES OF UV-C PROCESSED Aloe vera GEL BLENDS AT DIFFERENT pHs USING A CONTINUOUS FLOW UV SYSTEM

Extraction and Physicochemical Characterization of Dried Powder Mucilage from Opuntia ficus-indica Cladodes and Aloe Vera Leaves: A Comparative Study

Continuous Flow UV-C Irradiation Effects on the Physicochemical Properties of Aloe vera Gel and Pitaya (Stenocereus spp.) Blend

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