Food Products with High Antioxidant and Antimicrobial Activities and Their Sensory Appreciation

(1) Background: The demand for healthy and nutritious food is growing worldwide. Fermented dairy products are highly valued by consumers for their health benefits. Kefir is a fermented dairy product that brings many benefits to the consumer due to its antioxidant, anticancer, antidiabetic, antihypertensive and antimicrobial properties. Extracts from various plants in the form of volatile oils have a beneficial efct on consumer health. their antioxidant and antimicrobial activities were demonstrated. (2) Methods: In the present study, the main purpose was to obtain a fermented dairy product with a high nutritional value; therefore, kefir, enriched with three types of volatile oils, namely, volatile mint oil, volatile fennel oil and volatile lavender oil, was made. The kefir samples obtained were sensory and texturally analyzed. The beneficial effect on health must also be studied in terms of the acceptability of these products by consumers from a sensory point of view. A non-numerical method based on several multi-personal approval criteria was used to interpret the results obtained in the sensory analysis. In the textural analysis, the consistency, cohesiveness and firmness of the kefir samples were analyzed. (3) Results: The samples enriched with volatile oils obtained superior results compared to the control sample in both conducted examinations. Kefir samples with volatile oils retained their sensory and textural characteristics for a longer time during storage. (4) Conclusions: The volatile oils added to kefir positively influenced the sensory and textural characteristics of the finished product.

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Chemical composition of volatile oils and evaluation of antioxidant and antimicrobial activities of ethnopharmacologically selected Thai medicinal plants

Planta Medica ◽

10.1055/s-2007-986924 ◽

2007 ◽

Vol 73 (09) ◽

Cited By ~ 1

Author(s):

J Wungsintaweekul ◽

W Putalun ◽

W Sitthithaworn ◽

HW Pfeifhofer ◽

AH Brantner

Keyword(s):

Chemical Composition ◽

Medicinal Plants ◽

Antimicrobial Activities ◽

Volatile Oils ◽

Thai Medicinal Plants ◽

Antioxidant And Antimicrobial Activities

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A probiotic fermented dairy product improves immune response to influenza vaccination in the elderly

Proceedings of The Nutrition Society ◽

10.1017/s0029665100590521 ◽

2008 ◽

Vol 67 (OCE5) ◽

Author(s):

J. Aubin ◽

M. Remigy ◽

L. Verseil ◽

R. Bourdet-Sicard ◽

S. Vaudaine ◽

...

Keyword(s):

Immune Response ◽

Influenza Vaccination ◽

Dairy Product ◽

The Elderly ◽

Fermented Dairy Product ◽

Fermented Dairy

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Chemical analysis and evaluation of antioxidant and antimicrobial activities of fruit fractions ofMauritia flexuosaL. f. (Arecaceae)

PeerJ ◽

10.7717/peerj.5991 ◽

2018 ◽

Vol 6 ◽

pp. e5991 ◽

Cited By ~ 7

Author(s):

Carla de Fatima Alves Nonato ◽

Débora Odília Duarte Leite ◽

Rafael Caldas Pereira ◽

Aline Augusti Boligon ◽

Jaime Ribeiro-Filho ◽

...

Keyword(s):

Ethyl Acetate ◽

Antimicrobial Properties ◽

Antimicrobial Activities ◽

Antifungal Drugs ◽

Resistant Bacteria ◽

Array Detector ◽

Chloroform Fraction ◽

Standard Samples ◽

Antioxidant And Antimicrobial Activities

BackgroundFruit consumption is currently considered beyond the nutritional aspects because of the important roles in disease prevention and benefits to health. The objective of this study was to characterize the chemical profile and evaluate the antioxidant and antimicrobial properties of different fractions obtained from fruit pulps ofMauritia flexuosa(MFFs).MethodsInitially, chloroform, ethyl acetate and ethanol fractions were obtained from the pulps. Quantifications of total phenols and flavonoids were performed using the methods of Folin-Ciocalteu and complexation with aluminum chloride, respectively. Standard samples were used to identify and quantify phenolic acids and flavonoids using high-performance liquid chromatography with a diode-array detector (HPLC-DAD). The antioxidant capacity of the fractions was verified by sequestration of the free radical 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid (ABTS) and iron chelating activity. The antimicrobial activity was determined using the microdilution method and the modulating activity was determined using sub-inhibitory concentrations of the fractions in association with antibiotics.ResultsThe chemical analyzes revealed the presence of catechin, caffeic acid, rutin, orientin, quercetin, apigenin, luteolin and kaempferol, where all are present in the ethyl acetate fraction. The fractions exhibited moderate antioxidant and antimicrobial activities against Gram-positive andCandidastrains in addition to modulating the activity of conventional antibiotics. The most expressive result was obtained from the association of the chloroform fraction with cefotaxime, which produced a synergistic effect, reducing the minimum inhibitory concentration (MIC) of the antibiotic from 1,024 to 256 μg/mL.DiscussionThe fractions presented a constitution rich in phenolic compounds, especially flavonoids. The data obtained demonstrated that the fractions presented moderate antioxidant activity by acting both as primary and secondary antioxidants. The fractions presented antimicrobial and antibiotic potentiating activities, being the first record of modulating effect of fractions of this species against the studied microbial strains, but failed in modulating the activity of antifungal drugs, indicating that this plant has the potential to be used in the development of therapeutic alternatives against resistant bacteria. The constitution phenolic the fractions may be responsible for their pharmacological properties in vitro.

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