The crown plays an important role in maintaining quality of harvested pineapple

Liu, Jiazhu; He, Congcong; Shen, Fei; Zhang, Kaili; Zhu, Shijiang

doi:10.1016/j.postharvbio.2016.09.007

Cited by 30 publications

(22 citation statements)

References 22 publications

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“…This could explain why the crown extracts exhibited the highest TPC in the current study, their structure and position at the top most part of the pineapple fruit, allows them to receive a greater amount of light than the peel and core. Since photosynthesis takes place in the leaves, the most abundant phenolic biosynthetic pathway precursors can be found in the crown extracts, which has also been well as confirming the accumulation of phenolic compound [20].…”

Section: Tpc Of Md2 Pineapple Peel Crown and Core Extractsmentioning

confidence: 63%

“…Based on the PLS biplot, the metabolites that contributed the most to the higher DPPH and NO free radical scavenging activities were 3-methylglutaric acid (31), catechin (20), gallic acid (18), threonine (8), valine (10), fructose (1), and α-linolenic acid (16) (compounds with a VIP value ≥ 0.7, Figure 4b) which were found in the 100% ethanol ratio crown extracts. Catechin (20) and gallic acid (18) are suggested as the phenolic compound responsible for the DPPH and NO free radical scavenging activities due to its closest projection to the Y variables. Furthermore, it can be observed that ferulic acid (17), tryptophan (13) and protocatechuic acid (21) also had positive correlations with DPPH and NO free radical scavenging.…”

Section: Classification Of Md2 Pineapple Peel Crown and Core Extractmentioning

confidence: 99%

“…The obtained correlogram showed strong and significant correlations among alanine (5), threonine (8), valine (10), gallic acid (18) and 3-methylglutaric acid (31) and two biological activities (DPPH and NO). Glyceric acid (28), asparagine (7), catechin (20), succinic acid (27) and isoleucine (11) were mildly correlated with DPPH but strongly correlated with NO. In contrast, epicatechin (19), malic acid (15) and citric acid (14) were mildly correlated with the NO but has no correlation observed with DPPH.…”

Section: Relationship Between Antioxidant and α-Glucosidase Inhibitormentioning

confidence: 99%

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Potentially Bioactive Metabolites from Pineapple Waste Extracts and Their Antioxidant and α-Glucosidase Inhibitory Activities by 1H NMR

Azizan

Lee

Abdul‐Hamid

et al. 2020

Foods

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Pineapple (Ananas comosus) waste is a promising source of metabolites for therapeutics, functional foods, and cosmeceutical applications. This study strives to characterize the complete metabolite profiles of a variety of MD2 pineapple waste extracts. Metabolomics strategies were utilized to identify bioactive metabolites of this variety prepared with different solvent ratios. Each pineapple waste extract was first screened for total phenolic content, 2,2-diphenyl-1-picrylhydrazyl free radical scavenging, nitric oxide scavenging, and α-glucosidase inhibitory activities. The highest TPC was found in all samples of the peel, crown, and core extracted using a 50% ethanol ratio, even though the results were fairly significant than those obtained for other ethanol ratios. Additionally, crown extracted with a 100% ethanol ratio demonstrated the highest potency in DPPH and NO scavenging activity, with IC 50 values of 296.31 and 338.52 µg/mL, respectively. Peel extracted with 100% ethanol exhibited the highest α-glucosidase inhibitory activity with an IC 50 value of 92.95 µg/mL. Then, the extracts were analyzed and the data from 1 H NMR were processed using multivariate data analysis. A partial least squares and correlogram plot suggested that 3-methylglutaric acid, threonine, valine, and α-linolenic acid were the main contributors to the antioxidant activities, whereas epicatechin was responsible for the α-glucosidase inhibitory activity. Relative quantification further supported that 100% crown extract was among the extracts that possessed the most abundant potential metabolites. The present study demonstrated that the crown and peel parts of MD2 pineapple extracted with 100% ethanol are potentially natural sources of antioxidants and α-glucosidase inhibitors, respectively.

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Section: Tpc Of Md2 Pineapple Peel Crown and Core Extractsmentioning

confidence: 63%

Section: Classification Of Md2 Pineapple Peel Crown and Core Extractmentioning

confidence: 99%

Section: Relationship Between Antioxidant and α-Glucosidase Inhibitormentioning

confidence: 99%

See 1 more Smart Citation

Potentially Bioactive Metabolites from Pineapple Waste Extracts and Their Antioxidant and α-Glucosidase Inhibitory Activities by 1H NMR

Azizan

Lee

Abdul‐Hamid

et al. 2020

Foods

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show abstract

“…The DNA-free total RNA was used to synthesize cDNA. The cDNA was synthesized using an iScript cDNA Synthesis Kit (Bio-Rad, United States) following the manufacturer’s instructions ( Liu et al, 2017 ).…”

Section: Methodsmentioning

confidence: 99%

A Glycine-Rich RNA-Binding Protein, CsGR-RBP3, Is Involved in Defense Responses Against Cold Stress in Harvested Cucumber (Cucumis sativus L.) Fruit

Wang

Shen

et al. 2018

Front. Plant Sci.

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Plant glycine-rich RNA-binding proteins (GR-RBPs) have been shown to play important roles in response to abiotic stresses in actively proliferating organs such as young plants, root tips, and flowers, but their roles in chilling responses of harvested fruit remains largely unknown. Here, we investigated the role of CsGR-RBP3 in the chilling response of cucumber fruit. Pre-storage cold acclimation at 10°C (PsCA) for 3 days significantly enhanced chilling tolerance of cucumber fruit compared with the control fruit that were stored at 5°C. In the control fruit, only one of the six cucumber CsGR-RBP genes, CsGR-RBP2, was enhanced whereas the other five, i.e., CsGR-RBP3, CsGR-RBP4, CsGR-RBP5, CsGR-RBP-blt801, and CsGR-RBP-RZ1A were not. However, in the fruit exposed to PsCA before storage at 5°C, CsGR-RBP2 transcript levels were not obviously different from those in the controls, whereas the other five were highly upregulated, with CsGR-RBP3 the most significantly induced. Treatment with endogenous ABA and NO biosynthesis inhibitors, tungstate and L-nitro-arginine methyl ester, respectively, prior to PsCA treatment, clearly downregulated CsGR-RBP3 expression and significantly aggravated chilling injury. These results suggest a strong connection between CsGR-RBP3 expression and chilling tolerance in cucumber fruit. Transient expression in tobacco suggests CsGR-RBP3 was located in the mitochondria, implying a role for CsGR-RBP3 in maintaining mitochondria-related functions under low temperature. Arabidopsis lines overexpressing CsGR-RBP3 displayed faster growth at 23°C, lower electrolyte leakage and higher Fv/Fm ratio at 0°C, and higher survival rate at -20°C, than wild-type plants. Under cold stress conditions, Arabidopsis plants overexpressing CsGR-RBP3 displayed lower reactive oxygen species levels, and higher catalase and superoxide dismutase expression and activities, compared with the wild-type plants. In addition, overexpression of CsGR-RBP3 significantly upregulated nine Arabidopsis genes involved in defense responses to various stresses, including chilling. These results strongly suggest CsGR-RBP3 plays a positive role in defense against chilling stress.

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“…It is also grown in French outermost regions, especially on the Carib islands (Guadeloupe and Martinique) and particularly in the Indian Ocean, on Reunion Island, where it is the most important fruit crop. Pineapple (Ananas comosus L.) is a tropical and subtropical non-climacteric fruit that is well known for its high nutritional value [1].…”

Section: Introductionmentioning

confidence: 99%

Potential Use of Essentials Oils to Control Fruitlet Core Rot (FCR) in Pineapple (Queen Victoria Variety) in Reunion Island

Chillet¹,

Hoareau²,

Hoarau³

et al. 2020

AJPS

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The crown plays an important role in maintaining quality of harvested pineapple

Cited by 30 publications

References 22 publications

Potentially Bioactive Metabolites from Pineapple Waste Extracts and Their Antioxidant and α-Glucosidase Inhibitory Activities by 1H NMR

Potentially Bioactive Metabolites from Pineapple Waste Extracts and Their Antioxidant and α-Glucosidase Inhibitory Activities by 1H NMR

A Glycine-Rich RNA-Binding Protein, CsGR-RBP3, Is Involved in Defense Responses Against Cold Stress in Harvested Cucumber (Cucumis sativus L.) Fruit

Potential Use of Essentials Oils to Control Fruitlet Core Rot (FCR) in Pineapple (Queen Victoria Variety) in Reunion Island

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