Quality of limes juices based on the aroma and antioxidant properties

Lubinska-Szczygieł, Martyna; Różańska, Anna; Namieśnik, Jacek; Dymerski, Tomasz; Shafreen, Rajamohamed Beema; Weisz, Moshe; Ezra, Aviva; Gorinstein, Shela

doi:10.1016/j.foodcont.2018.02.005

Cited by 25 publications

(24 citation statements)

References 37 publications

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“…Many of the compounds identified in setubalense and murcott tangerines have been previously reported with a myriad of bioactivities. This includes antioxidant [ 17 , 18 , 19 , 20 ], anti-inflammatory [ 17 ], antidiabetic [ 19 , 21 ], antileishmanial [ 22 , 23 ], antimicrobial [ 19 , 22 , 24 , 25 ], cytotoxic [ 22 , 23 ], antitumor [ 26 ], and antiproliferative activities [ 27 , 28 ]. Furthermore, there are evidence pointing to other protective effects against Alzheimer’s [ 29 ] and tuberculosis [ 30 ].…”

Section: Resultsmentioning

confidence: 99%

Tangerines Cultivated on Madeira Island—A High Throughput Natural Source of Bioactive Compounds

Figueira

Porto-Figueira

Câmara

2020

Foods

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Tangerines (Citrus reticulata) are popular fruits worldwide, being rich in many bioactive metabolites. The setubalense variety cultivated on Madeira Island has an intense aroma easily distinguishable from other tangerines, being traditionally used to enrich several foods and beverages. Nonetheless, setubalense volatile composition has never been characterized, and we aimed to unveil the bioactive potential of peels and juices of setubalense tangerines and compare them with the murcott variety grown in Portugal mainland. Using headspace solid-phase microextraction coupled to gas chromatography mass spectrometry (HS-SPME/GC-MS), we identified a total of 128 volatile organic metabolites (VOMs) in the juice and peels, with d-limonene, γ-terpinene, β-myrcene, α- and β-pinene, o-cymene, and terpinolene, the most dominant in both cultivars. In contrast, setubalense juices are richer in terpenes, many of them associated with health protection. Discriminant analysis revealed a pool of VOMs, including β-caryophyllene and E-ocimene, with bioactive properties able to differentiate among tangerines according to variety and sample type (peel vs. juice). This is the first report on the volatile composition of setubalense tangerines grown on Madeira Island revealing that its pungent aroma is constituted by secondary metabolites with specific aroma notes and health properties. This is strong evidence of the higher nutraceutical value of such fruit for the human diet.

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Section: Resultsmentioning

confidence: 99%

Tangerines Cultivated on Madeira Island—A High Throughput Natural Source of Bioactive Compounds

Figueira

Porto-Figueira

Câmara

2020

Foods

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“…These cations stimulate the creation of reactive oxygen species (ROS), which are harmful to human health. Previous to human studies, the determination of the radical scavenging (ORAC, ABTS, and DPPH methods) are commonly applied for the analysis of many matrices as vegetables [ 5 , 6 , 7 , 8 ], juice fruits [ 9 , 10 ], and vegetables oils [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Avocado Seed: A Comparative Study of Antioxidant Content and Capacity in Protecting Oil Models from Oxidation

et al. 2018

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Increasingly, consumers want products containing little or no synthetic compounds. Avocado seeds, which are a residue of the food industry, could be used to obtain extracts with high antioxidant power. In the present study, the most popular radical scavenging methods are presented, establishing a comparison between them, besides working with two different extractions: pure methanol and ethanol–water (50:50 v/v). The radical scavenging assay methods ORAC and ABTS were performed, as well as a novel method: the reaction to methoxy radical, as determined by electron paramagnetic resonance (EPR). Peroxide value and thiobarbituric acid reactive compounds (TBARs) were used to monitor the oxidation of avocado seed oil, as well as the power of the avocado seed extract (ASE) to delay oil oxidation by oxidation induction time (OIT) and measured by differential scanning calorimetry (DSC). Radical scavenging methods have values between 1310–263 µmol TE/g of mass dissolved for ORAC and ABTS, respectively. The individual contribution of each of the compounds present in the extract was analyzed. The sum of all of them contributed up to 84% of the total radical scavenging activity. The concentration of 0.75% ASE causes a delay in the oxidation that is close to 80%, as measured by OIT. This implies that avocado seed residue may have a use as a natural antioxidant source, providing added value to organic waste.

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“…The antioxidant activity of the materials was examined by the application of the FRAP assay in the aqueous olive leaf extracts and the DPPH radical scavenging activity in the alcoholic extracts. The methods employed are commonly applied for the analysis of many matrices [43] such as nuts [44], vegetable oils [45], fruits, and relevant products [26,46,47,48]. All the examined polar extracts (aqueous, methanol, and ethanol) presented similar trends (Figure 6, Table A1).…”

Section: Resultsmentioning

confidence: 90%

Screening Olive Leaves from Unexploited Traditional Greek Cultivars for Their Phenolic Antioxidant Dynamic

Papoti

Παπαγεωργίου

Dervisi

et al. 2018

Foods

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Quality characteristics of olive products significantly depend on cultivar (cv), among other factors. In this study, seven traditional, noncommercial Greek cultivars, along with the commercial Spanish Arbequina cv., were examined for the phenolic antioxidant dynamic of their leaves. Polar extracts (aqueous, methanol, and ethanol) were analyzed for Total Phenol (TP), Flavonoid (TFL), Hydroxycinnamic Acid Derivatives (THAD), Flavonol (TFLVN) contents, DPPH radical scavenging ability, and Ferric Reducing Capacity (FRAP). Selective characteristics of olive leaf methanol extracts for all cultivars were re-examined on a second sampling period. Olive leaf is considered a rich source of phenolic antioxidants total phenol content reaching 29.3 ± 1.3, 30.6 ± 0.4, and 27.0 ± 1.1 mg caffeic acid/g dry leaf for aqueous, methanol, and ethanol extracts, respectively) and all cultivars were considered of equal bioactive dynamic. TP data derived from Folin–Ciocalteu and another spectrophotometric assay employed presented a high correlation for all examined cases (R2 = 71.5–86.9%). High correlation (R2 = 0.92) was also found between TP and FRAP findings of aqueous extracts. Olive leaf is considered a promising source of phenolic antioxidants irrelevant to cultivar and therefore even cultivars less effective for oil or table olive production could be efficiently exploited for the bioactive dynamic of their leaves.

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Quality of limes juices based on the aroma and antioxidant properties

Cited by 25 publications

References 37 publications

Tangerines Cultivated on Madeira Island—A High Throughput Natural Source of Bioactive Compounds

Tangerines Cultivated on Madeira Island—A High Throughput Natural Source of Bioactive Compounds

Avocado Seed: A Comparative Study of Antioxidant Content and Capacity in Protecting Oil Models from Oxidation

Screening Olive Leaves from Unexploited Traditional Greek Cultivars for Their Phenolic Antioxidant Dynamic

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