Evaluation of antioxidant capacity and flavor profile change of pomegranate wine during fermentation and aging process

Anti-aging cosmetics are often sought after in order to slow down the aging process. Free radicals are one of the main causes of skin aging, and therefore antioxidants are used in anti-aging cosmetics. The aim of this study was to investigate which method is the most suitable for determining the antioxidant capacity of these products. Having samples extracted, the antioxidant capacity of the extracts obtained was determined by the following spectrophotometric methods: DPPH, Folin-Ciocalteu, FRAP, the ABTS method and the ferroion chelation method with ferrosine. The antioxidant capacity of the samples varied depending on the extract type and the method used. DPPH and ferroion chelation measurements with ferrosine were carried out in the part of the spectrum where plant pigments absorb. These pigments are often found in anti-aging products affecting these methods measurement results. The Folin-Ciocalteu method is suitable for researching the antioxidant capacity of hydrophilic extracts, but not lipophilic ones, where turbidity and the formation of a gelled ring occur. The FRAP method revealed similar results for all the samples and proved to be less sensitive than the others. The ABTS method for both types of extracts has proven to be the most suitable and sensitive method for determining the antioxidant capacity of anti-aging products.

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Functional properties of Saccharomyces kluyveri Y97-fermented solo black garlic

Asian Journal of Agriculture ◽

10.13057/asianjagric/g020203 ◽

2018 ◽

Vol 2 (02) ◽

pp. 48-51 ◽

Cited By ~ 2

Author(s):

FITRI SETIYONINGRUM ◽

GUNAWAN PRIADI ◽

NINA HERLINA ◽

AKHMAD SOLIKHIN ◽

NURUL LISANI

Keyword(s):

Relative Humidity ◽

Antioxidant Capacity ◽

Functional Properties ◽

Aging Process ◽

Flavonoid Content ◽

Aging Period ◽

Saccharomyces Kluyveri ◽

Fermentation Period

Setiyoningrum F, Pribadi G, Afiati F, Herlina N, Solikhin A, Lisani N. 2018. Functional properties of Saccharomyces kluyveri Y97-fermented solo black garlic. Asian J Agric 2: 48-51. Saccharomyces kluyveri Y97-fermented solo black garlic was made by fermentation of fresh solo garlic in medium containing S. kluyveri aging in 70C and relative humidity close to 60%. The fermentation period of fresh solo garlic in the medium was 0, 2, 4 dan 6 days. The black aging period was 0 (fresh garlic), 7, 14 dan 21 days. Antioxidant capacity, flavonoid content and total poliphenol were observed. S. kluyveri Y97-fermented solo black garlic had higher antioxidant capacity, flavonoid content and total polifenol compared to solo black garlic without fermentation. Fermentation of fresh solo garlic by S. kluyveri Y97 before aging process could increase solo black garlic’s functional properties.

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Estrogens and the aging process. The detection, prevention, and retardation of osteoporosis

JAMA ◽

10.1001/jama.196.3.219 ◽

1966 ◽

Vol 196 (3) ◽

pp. 219-224 ◽

Cited By ~ 20

Author(s):

M. E. Davis

Keyword(s):

Aging Process

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Trans-resveratrol supplement lowers lipid peroxidation responses of exercise in male Wistar rats

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831/a000654 ◽

2020 ◽

pp. 1-6 ◽

Cited By ~ 1

Author(s):

Masoud Nasiri ◽

Saja Ahmadizad ◽

Mehdi Hedayati ◽

Tayebe Zarekar ◽

Mehdi Seydyousefi ◽

...

Keyword(s):

Lipid Peroxidation ◽

Antioxidant Capacity ◽

Total Antioxidant Capacity ◽

Wistar Rats ◽

Enzymatic Antioxidants ◽

Acute Response ◽

Total Antioxidant ◽

Male Wistar Rats ◽

Exercise Induced ◽

And Control

Abstract. Physical exercise increases free radicals production; antioxidant supplementation may improve the muscle fiber’s ability to scavenge ROS and protect muscles against exercise-induced oxidative damage. This study was designed to examine the effects of all-trans resveratrol supplementation as an antioxidant to mediate anti-oxidation and lipid per-oxidation responses to exercise in male Wistar rats. Sixty-four male Wistar rats were randomly divided into four equal number (n = 16) including training + supplement (TS), training (T), supplement (S) and control (C) group. The rats in TS and S groups received a dose of 10 mg/kg resveratrol per day via gavage. The training groups ran on a rodent treadmill 5 times per week at the speed of 10 m/min for 10 min; the speed gradually increased to 30 m/min for 60 minutes at the end of 12th week. The acute phase of exercise protocol included a speed of 25 m/min set to an inclination of 10° to the exhaustion point. Superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT) activity, non-enzymatic antioxidants bilirubin, uric acid, lipid peroxidation levels (MDA) and the total antioxidant capacity (TAC) were measured after the exercise termination. The data were analyzed by using one-way ANOVA. The result showed that endurance training caused a significant increase in MDA level [4.5 ± 0.75 (C group) vs. 5.9 ± 0.41 nmol/l (T group)] whereas it decreased the total antioxidant capacity [8.5 ± 1.35 (C group) vs. 7.1 ± 0.55 mmol/l (T group)] (p = 0.001). In addition, GPx and CAT decreased but not significantly (p > 0.05). The training and t-resveratrol supplementation had no significant effect on the acute response of all variables except MDA [4.3 ± 1.4 (C group) vs. 4.0 ± 0.90 nmol/l (TS group)] (p = 0.001) and TAC [8.5 ± 0.90 (C group) vs. 6.6 ± 0.80 mmol/l (TS group)] (p = 0.004). It was concluded that resveratrol supplementation may prevent exercise-induced oxidative stress by preventing lipid peroxidation.

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The Role of Polyphenols in the Modulation of Plasma Non-Enzymatic Antioxidant Capacity (NEAC)

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831/a000116 ◽

2012 ◽

Vol 82 (3) ◽

pp. 228-232 ◽

Cited By ~ 7

Author(s):

Mauro Serafini ◽

Giuseppa Morabito

Keyword(s):

Antioxidant Capacity ◽

Dietary Intervention ◽

Ex Vivo ◽

The Body ◽

Dietary Polyphenols ◽

Enzymatic Antioxidant ◽

Endogenous Antioxidant

Dietary polyphenols have been shown to scavenge free radicals, modulating cellular redox transcription factors in different in vitro and ex vivo models. Dietary intervention studies have shown that consumption of plant foods modulates plasma Non-Enzymatic Antioxidant Capacity (NEAC), a biomarker of the endogenous antioxidant network, in human subjects. However, the identification of the molecules responsible for this effect are yet to be obtained and evidences of an antioxidant in vivo action of polyphenols are conflicting. There is a clear discrepancy between polyphenols (PP) concentration in body fluids and the extent of increase of plasma NEAC. The low degree of absorption and the extensive metabolism of PP within the body have raised questions about their contribution to the endogenous antioxidant network. This work will discuss the role of polyphenols from galenic preparation, food extracts, and selected dietary sources as modulators of plasma NEAC in humans.

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Images of Aging in the Psychotherapeutic Context

GeroPsych ◽

10.1024/1662-9647/a000129 ◽

2015 ◽

Vol 28 (2) ◽

pp. 47-55 ◽

Cited By ~ 10

Author(s):

Eva-Marie Kessler ◽

Catherine E. Bowen

Keyword(s):

Old Age ◽

Diagnostic Tests ◽

Aging Process ◽

Developmental Psychology ◽

Mental Representations ◽

Later Life ◽

Future Research ◽

Psychotherapeutic Process ◽

Images Of Aging ◽

Client Communication

Both psychotherapists and their clients have mental representations of old age and the aging process. In this conceptual review, we draw on available research from gerontology, social and developmental psychology, and communication science to consider how these “images of aging” may affect the psychotherapeutic process with older clients. On the basis of selected empirical findings we hypothesize that such images may affect the pathways to psychotherapy in later life, therapist-client communication, client performance on diagnostic tests as well as how therapists select and apply a therapeutic method. We posit that interventions to help both older clients and therapists to reflect on their own images of aging may increase the likelihood of successful treatment. We conclude by making suggestions for future research.

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Analysis of Self-Concept in Older Adults in Different Contexts

European Journal of Psychological Assessment ◽

10.1027/1015-5759.20.4.262 ◽

2004 ◽

Vol 20 (4) ◽

pp. 262-274 ◽

Cited By ~ 13

Author(s):

Manuel de Gracia Blanco ◽

Josep Garre Olmo ◽

María Marcó Arbonès ◽

Pilar Monreal Bosch

Keyword(s):

Older Adults ◽

Nursing Home ◽

Depressive Symptoms ◽

External Validity ◽

Aging Process ◽

Well Being ◽

Self Esteem ◽

Self Concept ◽

Self Perceptions ◽

Discriminatory Capacity

Summary: Self-concept is a construct consisting of a group of specific self-perceptions that are hierarchically organized. Age-associated changes of self-concept are related to the individual's perception of the changes occurring throughout the aging process. The authors examined external validity and internal consistency of an instrument that has been developed to assess self-concept in older adults and examined self-concept's characteristics in two different contexts. Results confirm the multidimensionality of the scale and show a satisfactory external validity, indicating good discriminatory capacity. Findings support the hypothesis that older people who live in a nursing home have a poor self-esteem, self-concept, and psychological well-being and have a greater presence of depressive symptoms than people who live in their own home.

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