Effect of brewing material and various additives on polyphenolic composition and antioxidant bioactivity of commercial Tilia platyphyllos Scop. infusions

Bardakçı, Hilal; Barak, Timur Hakan; Ozdemir, Kevser; Celep, Engin

doi:10.35333/jrp.2020.119

Cited by 4 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Protocatechuic acid (PA) contents in plant extract, PG, and IN fractions of Z. jujuba were determined by using the previously described method of Bardakci et al (2020). A stock standard solution (1 mg mL À1 ) of PA was prepared in MeOH.…”

Section: Quantification Of the Major Bioactive Metabolite By Hptlcmentioning

confidence: 99%

“…Total phenolic content assay. The evaluation of total phenolic contents of the samples was executed according to a previously applied method (Bardakci et al, 2020). FCR (Folin-Ciocalteu reagent) was used, and absorbance was read in 765 nm.…”

Section: Estimation Of In Vitro Phenolic Profilementioning

confidence: 99%

“…Cupric reducing antioxidant capacity (CUPRAC). CUPRAC activity of the samples were measured according to the method specified before by Bardakci et al (2020). After the incubation period, the absorbance was measured at 450 nm in a microplate spectrophotometer.…”

Section: Estimation Of In Vitro Phenolic Profilementioning

confidence: 99%

See 2 more Smart Citations

Effect of pre-treatment and oil popping conditions on quinoa popping quality

Deepak¹,

Shivaswamy²,

Sharmila³

et al. 2022

AAlim

View full text Add to dashboard Cite

Quinoa is a pseudocereal having outstanding nutritional profile and health-promoting biofunctional compounds. It is able to pop into an affordable, crispy, and flavourful ready-to-eat snack by conventional oil-popping method. Oil-popping is the process of frying grains in hot oil for a short time to induce vapour-driven expansion of grains. The effects of process variables on oil-popping quality of quinoa were evaluated. The conditions of processing were optimised using Response Surface Methodology. The grains (10 g) were hydrated by adding 0.1–0.3 mL of water containing a varying salt concentration of 0–1%, w/w and popped in coconut oil maintained at a popping temperature of 200–240 °C for a popping time of 10–30 s. The developed popped quinoa was analysed for popping quality indices. It was found that the increase in popping temperature, popping time, and salt concentration, and decrease in moisture level significantly decreased bulk density but increased popping yield (% popped grains), expansion ratio (degree of volume expansion), and flake size (average kernel size) of popped quinoa. Overall acceptability of popped quinoa in terms of sensory attributes was positively correlated with popping temperature and popping time. The optimised variables generated a popping yield of 75.56%, expansion ratio of 3.07, flake size of 11.58 mm3, bulk density of 0.29 g mL−1, and overall acceptability score of 8.40. A threefold expansion and a fair popping yield obtained from oil-popped quinoa offer a significant potential to generate profit for manufacturers.

show abstract

Section: Quantification Of the Major Bioactive Metabolite By Hptlcmentioning

confidence: 99%

Section: Estimation Of In Vitro Phenolic Profilementioning

confidence: 99%

See 1 more Smart Citation

Effect of pre-treatment and oil popping conditions on quinoa popping quality

Deepak¹,

Shivaswamy²,

Sharmila³

et al. 2022

AAlim

View full text Add to dashboard Cite

show abstract

Evaluation of Phytochemistry and Antidiabetic Potential of an Astragalus Species (Astragalus kurdicus Boiss.)

Ozdemir,

Hakan Barak,

Kurt Celep

et al. 2024

Chemistry & Biodiversity

View full text Add to dashboard Cite

Astragalus kurdicus Boiss. roots are used in folk medicine for antidiabetic purposes. Different metabolites of Astragalus plants have a notable potential in antidiabetic activity via differing mechanisms. Herewith this study designed to assess the antidiabetic activity of Astragalus kurdicus, utilizing a range of diabetes‐related in vitro methodologies and to investigate the chemical composition of the plant. According to the results of the activity tests, water extract (AKW) was the most active extract in PTP1B, DPP4, and α‐amylase inhibition tests (87.17%, 82.4%, 91.49% respectively at 1 mg/ml). Total extract, AKM (85.63%), showed the highest AGEs inhibition activity. To test possible improvement effects of the extracts on diabetes through gut‐microbiota, cell growth rates of three probiotic microorganisms were measured. AKM showed highest potential of prebiotic activity among tested extracts and caused higher biomass increase than standard prebiotics. Furthermore, flavonoid‐rich extract was found to be mostly responsible for the high antioxidant activity. The highest saponin and astragalosides content were seen in AKB extract in HPTLC analysis. Among the measured saponins, the abundance of Astragaloside IV (27.41 μg/mg in AKM) was the highest in all fractions. Thus, for the first time, the antidiabetic activity of A. kurdicus was evaluated from various perspectives.

show abstract

Can the galling mite Eriophyes tiliae alter the phenolic profile and antioxidant capacity of Tilia platyphyllos in a high UV radiation environment?

Guedes,

Rodríguez‐Cerda,

Gavilán

et al. 2024

Entomologia Exp Applicata

View full text Add to dashboard Cite

Leaves of large‐leaved lime, Tilia platyphyllos Scop. (Malvaceae), harbor colonies of Eriophyes tiliae (Pagenstecher) (Acari: Eriophyidae), capable of modifying the leaf structure (inducer of nail‐galls) and physiology. The aerial organs of T. platyphyllos have traditionally been consumed for their high antioxidant capacity, related to the rich polyphenol profile. Here, we investigated the polyphenol profiles and antioxidant activity of T. platyphyllos non‐galled leaves and galls to determine the changes induced by the mite in a Chilean environment with high ultraviolet (UV) radiation. Phenolic compound identification in the methanol extracts of non‐galled leaves and galls was carried out through HPLC. Furthermore, the antioxidant activity of the extracts was quantified through spectrophotometry, and it was compared with the standards of the three major phenolic compounds of both organs. Nine phenolic compounds were detected in non‐galled leaves and galls, with no differences between the two organs, except for the absence of gallic acid in galls. The concentration of phenolic compounds did differ significantly between the two conditions. In leaf galls, epicatechin and cyanidin‐3‐glucoside concentrations and antioxidant capacity increased significantly compared to non‐galled leaves. As chlorogenic acid and cyanidin‐3‐glucoside are active phenols responding to UV radiation stress, their concentration in T. platyphyllos leaves could be a response to the high UV radiation occurring in Chile during spring and summer. The phenolic compounds detected here have been reported to be potent antioxidants, that are probably potentiated by E. tiliae for its own protection against UV‐B radiation, as the two most abundant compounds in the galls exhibited the highest capacity to reduce ABTS and DPPH radicals. However, we do not rule out the participation of phenolics in protection against natural enemies of the gall mite, as chlorogenic acid and epicatechin are powerful antifeedants.

show abstract

Effect of brewing material and various additives on polyphenolic composition and antioxidant bioactivity of commercial Tilia platyphyllos Scop. infusions

Cited by 4 publications

References 28 publications

Effect of pre-treatment and oil popping conditions on quinoa popping quality

Effect of pre-treatment and oil popping conditions on quinoa popping quality

Evaluation of Phytochemistry and Antidiabetic Potential of an Astragalus Species (Astragalus kurdicus Boiss.)

Can the galling mite Eriophyes tiliae alter the phenolic profile and antioxidant capacity of Tilia platyphyllos in a high UV radiation environment?

Contact Info

Product

Resources

About