Search results for "antioxidant"

Ferulago nodosa Subsp. geniculata (Guss.) Troia & Raimondo from Sicily (Italy): Isolation of Essential Oil and Evaluation of Its Bioactivity

2020

Ferulago nodosa (L.) Boiss. (Apiaceae) is a species occurring in the Balkan-Tyrrhenian area. The object of the present study is Sicilian F. nodosa subsp. geniculata (Guss.) Troia & Raimondo, classified as an endemic F. nodosa subspecies. Aerial parts of this plant species were subjected to hydrodistillation to obtain an essential oil. A total of 93 compounds were identified with 2,3,6-trimethyl benzaldehyde (19.0%), spathulenol (9.0%), (E)-caryophyllene (5.4%), and caryophyllene oxide (5.4%) as the main components. The biological activities of F. nodosa essential oil were also investigated. This oil showed an interesting antioxidant potential in a 2,2′-Azino-bis(3-ethylbenzothiazoline-6-sul…

Antioxidant activity of essential oils obtained from aerial part of some Lamiaceae species

2018

Introduction: Essential oils are the perspective source of natural antioxidants because some synthetic antioxidants are now suspected to be potentially harmful to human health. As free radicals can cause inflammatory diseases, cancer, atherosclerosis, and aging, antioxidants can inhibit oxidative chain reactions. Essential oils have a wide range of pharmacological effects as they are multicomponent mixtures of chemical compounds, mainly terpenoids and aromatic components. Materials and Methods: The antioxidant activity of essential oils obtained from aerial parts of Ocimum americanum, Lophanthus anisatus, Monarda fistulosa, and Satureja hortensis (Lamiaceae) has been evaluated spectrophotom…

Increasing Yield and Antioxidative Performance of Litchi Pericarp Procyanidins in Baked Food by Ultrasound-Assisted Extraction Coupled with Enzymatic…

2018

Extraction with organic solvents is a traditional method to isolate bioactive compounds, which is energy-wasting and time-consuming. Therefore, enzyme and ultrasound treatments were combined to assist the extraction of oligomeric procyanidins from litchi pericarp (LPOPC), as an innovative approach to replace conventional extraction methods. Under optimum conditions (enzyme concentration 0.12 mg/mL, ultrasonic power 300 W, ultrasonic time 80 min, and liquid/solid ratio 10 mL/g), the yield of LPOPC could be improved up to 13.5%. HPLC analysis indicated that the oligomeric procyanidins (OPC) content of LPOPC from proposed extraction was up to 89.6%, mainly including (&minus

Oxidative stress and antioxidant levels in patients with anorexia nervosa: A systematic review and exploratory meta-analysis.

2015

Objective To systematically review and meta-analyze oxidative stress and antioxidant markers in anorexia nervosa (AN). Methods Electronic PubMed search from database inception until 12/31/2013. Out of 1062 hits, 29 studies comparing oxidative stress/antioxidant markers between patients with AN and healthy controls (HCs) with a total of 1,729 participants (AN-=-895, HCs-=-834) were eligible. Data about oxidative stress and antioxidant markers, independent of their source, were extracted. We calculated random effects standardized mean differences (SMDs) as effect size measures for outcomes reported in ≥5 studies; others were summarized descriptively. Results Compared to HCs, AN patients showe…

Oxidative Stress and Antioxidant Levels in Patients with Anorexia Nervosa after Oral Re-alimentation: A Systematic Review and Exploratory Meta-analys…

2015

Oxidative stress markers seem to be higher in patients with anorexia nervosa (AN) than healthy controls, but the potentially beneficial effects of weight gain is not known. We calculated random effects standardised mean differences (SMDs) as effect size measures of oxidative stress marker changes after re-alimentation reported in two or more studies, summarising others descriptively. Seven longitudinal studies (n = 104) were included. After a median follow-up period of 8 weeks, AN patients significantly increased their body mass index (15.1 ± 2.1 to 17.1 ± 2.2, p < 0.0001). This weight gain was followed by a significant increase in serum levels of the antioxidant albumin (studies = 6, SM…

Changes in plasmatic redox status following low-moderate interval exercise training in rhythmic gymnastics trainers

2013

Behaviour of the oxidative status in athletes before and after a cardio-pulmonary test

2008

THE ANTIOXIDANT PROPERTIES OF PHENOLIC MOLECULES IN RELATIONSHIP WITH THE pH OF ENVIRONMENT REACTION

2011

THE ANTIOXIDANT PROPERTIES OF PHENOLIC MOLECULES IN RELATIONSHIP WITH THE pH OF ENVIRONMENT REACTION Some epidemiological evidence suggests beneficial effects on human health from a diet rich in fruit, vegetables and certain types of beverages such as tea and wine (1,2). These compounds do not have nutritive properties but they have a functional role in the human organism. Some studies have investigated the effect of pH on the antioxidant properties of polyphenols (3,4) and have reported that the pH-dependent behaviour is related to hydroxyl deprotonation. However, these studies did not compare the antioxidant activity of various classes of polyphenols and did not take into account the acid…

In vitro digestion of beta glucan enriched pasta: polysaccharide molecular characterization and antioxidant activity of bioaccessible fraction.

2014

Production and Characterization of Medium-Sized and Short Antioxidant Peptides from Soy Flour-Simulated Gastrointestinal Hydrolysate.

2021

Soybeans (Glycine max) are an excellent source of dietary proteins and peptides with potential biological activities, such as antihypertensive, anti-cholesterol, and antioxidant activity