Antioxidant activity of durum wheat bran

Onyeneho, Sylvester N.; Hettiarachchy, Navam

doi:10.1021/jf00021a005

Cited by 207 publications

(146 citation statements)

References 12 publications

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“…Glucose esters of p-coumaric and ellagic acids were found in strawberry extracts [10]. The antioxidant capacity of some phenolic acids decreased in the order protocatechuic acid > chlorogenic acid > caffeic acid > p-hydroxybenzoic acid > gentistic acid > ferulic acid > vanillic acid > syringic acid > p-coumaric acid [29]. Oxygen radical absorbance capacity method also confirmed that protocatechuic acid (18. [30].…”

Section: Discussionmentioning

confidence: 74%

Comparison of antioxidant capacity and phenolic compounds of berries, chokecherry and seabuckthorn

Hydamaka

Lowry³

et al. 2009

Open Life Sciences

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Antioxidant capacity and phenolic compounds (phenolic acids and anthocyanins) of four berry fruits (strawberry, Saskatoon berry, raspberry and wild blueberry), chokecherry and seabuckthorn were compared in the present study. Total phenolic content and total anthocyanin content ranged from 22.83 to 131.88 g/kg and 3.51 to 13.13 g/kg, respectively. 2,2-Diphenyl-1-picryhydrazyl free radical scavenging activity ranged from 29.97 to 78.86%. Chokecherry had the highest antioxidant capacity when compared with berry fruits and seabuckthorn. The highest caffeic acid, gallic acid and trans-cinnamic acid levels were found in chokecherry (6455 mg/kg), raspberry (1129 mg/kg) and strawberry (566 mg/kg), respectively. Caffeic acid was also the major phenolic acid in Saskatoon berry (2088 mg/kg) and wild blueberry (1473 mg/kg). The findings that chokecherry has very high antioxidant capacity and caffeic acid levels, are useful for developing novel value-added antioxidant products and also provide evidence essential for breeding novel cultivars of fruit plants with strong natural antioxidants.

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Section: Discussionmentioning

confidence: 74%

Comparison of antioxidant capacity and phenolic compounds of berries, chokecherry and seabuckthorn

Hydamaka

Lowry³

et al. 2009

Open Life Sciences

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“…Eight types of phenolic acids in F1-T1 (DT 27°C) and F2-W (DT 93°C) and seven types of phenolic acids in F3-T2 (DT 27°C) and F4-HA (DT 27 and 65°C ) were detected ( Table 5 Many different phenolic acids contribute to the total phenolic acid composition of corn. Standard phenolic acids decreased in antioxidant activity in the following order: protocatechuic acid (32). Although FA is the predominant phenolic acid in many grains, free phenolic acids, soluble phenolic esters, and insoluble-bound phenolic acids still exist in grains prior to alkaline hydrolysis of grain (33).…”

Section: Dpphmentioning

confidence: 99%

High-Amylose Corn Exhibits Better Antioxidant Activity than Typical and Waxy Genotypes

Wei

White

et al. 2006

J. Agric. Food Chem.

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The consumption of fruits, vegetables, and whole grains rich in antioxidative phytochemicals is associated with a reduced risk of chronic diseases such as cancer, coronary heart disease, diabetes, Alzheimer's disease, cataract, and aged-related functional decline. For example, phenolic acids are among the main antioxidative phytochemicals in grains that have been shown to be beneficial to human health. Corn (Zea mays L.) is a major staple food in several parts of the world; thus, the antioxidant activity of several corn types was evaluated. The 2,2-Diphenyl-1-picryhydrazyl free radical (DPPH•) scavenging activity, total phenolic content (TPC), antioxidant capacity of lipid-soluble substances (ACL), oxygen radical absorbance capacity (ORAC), and phenolic acid compositions of typical and mutant genotypes (typical-1, waxy, typical-2, and highamylose) were investigated. The DPPH• scavenging activity at 60 min was 34.39−44.51% in methanol extracts and 60.41−67.26% in HCl/methanol (1/99, v/v) extracts of corn. The DPPH• scavenging activity of alkaline hydrolysates of corn ranged from 48.63 to 64.85%. The TPC ranged from 0.67 to 1.02 g and from 0.91 to 2.15 g of ferulic acid equiv/kg of corn in methanol and HCl/methanol extracts, respectively. The TPC of alkaline hydrolysates ranged from 2.74 to 6.27 g of ferulic acid equiv/kg of corn .87 mg/kg). Levels of DPPH• scavenging activity, TPC, ACL, and ORAC in HCl/methanol extracts were obviously higher than those present in methanol extracts. There was no significant loss of antioxidant capacity when corn was dried at relatively high temperatures (65 and 93 °C) postharvest as compared to drying at ambient temperatures (27 °C). Alkaline hydrolysates showed very high TPC, ACL, and ORAC values when compared to methanol and HCl/methanol extracts. High-amylose corn had a better antioxidant capacity than did typical (nonmutant) corn genotypes. The consumption of fruits, vegetables, and whole grains rich in antioxidative phytochemicals is associated with a reduced risk of chronic diseases such as cancer, coronary heart disease, diabetes, Alzheimer's disease, cataract, and aged-related functional decline. For example, phenolic acids are among the main antioxidative phytochemicals in grains that have been shown to be beneficial to human health. Corn (Zea mays L.) is a major staple food in several parts of the world; thus, the antioxidant activity of several corn types was evaluated. The 2,2-Diphenyl-1-picryhydrazyl free radical (DPPH • ) scavenging activity, total phenolic content (TPC), antioxidant capacity of lipid-soluble substances (ACL), oxygen radical absorbance capacity (ORAC), and phenolic acid compositions of typical and mutant genotypes (typical-1, waxy, typical-2, and high-amylose) were investigated.

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“…The phenols could show activity synergistically with nonphenolic compounds. For this reason, phenolic compounds would not be the only ones responsible for the antioxidant activity (Onyeneho & Hettiarachchy, 1992). The high total phenolic concentration in some plant extracts may be due to the presence of saponin (Grover et al, 2001), amino acid (Uchikoba et al, 1998) and triterpenoids (Shih et al, 2005).…”

Section: Stem (N = 20)mentioning

confidence: 99%

Estimation of organic matter digestibility, metabolizable energy, phenolic compounds and antioxidant activity of stems and seeds of the <i>Juncus acutus</i> plant in ruminant nutrition

Erdem¹,

Çetinkaya²,

Nisbet³

et al. 2016

SA J. An. Sci.

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The objectives of the present study were to determine the organic matter digestibility (OMD), metabolizable energy (ME), antioxidant activity and total phenolic and flavonoid concentrations of stems and seeds of Juncus acutus. Stem and seed samples were collected from Hamsiloz Bay in Sinop, Turkey, and the proximate analysis was carried on them. The OMD percentage and ME values of the samples were estimated from gas measured by the in vitro gas production method. Phenolic and flavonoid concentrations and total antioxidant activity were determined spectrophotometrically. Mean OMD, ME OMD and ME GP levels and gas production kinetic parameters A, c and T 1/2 of J. acutus stem and seed samples were 40.3% and 47.7%; 6.44 and 7.63 MJ/kg DM, 5.96 and 7.07 MJ/kg DM, 35.12 and 47.19 mL, 0.055% and 0.092%, and 12.60 and 7.53 h, respectively. Mean OMD percentage, ME and gas production kinetic parameters A, c and T 1/2 of the stems were significantly different than that of the seed. The antioxidant activity, total phenolic and flavonoid concentrations of stems and seeds of J. acutus were 88.45 and 88.48 IC50 mg/mL, 19.70 and 40.99 mg GAE/100 g and 0.63 and 1.20 mg Qe/100 g, respectively. Mean values of total phenolic and flavonoid concentrations of stems were significantly different from that of the seeds. In conclusion, both stems and seeds of J. acutus may be considered alternative feed sources for ruminants. Furthermore, when J. acutus stems and seeds are included in ruminant diet, the phenolic compounds may contribute to the intake of natural antioxidants.

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Antioxidant activity of durum wheat bran

Cited by 207 publications

References 12 publications

Comparison of antioxidant capacity and phenolic compounds of berries, chokecherry and seabuckthorn

Comparison of antioxidant capacity and phenolic compounds of berries, chokecherry and seabuckthorn

High-Amylose Corn Exhibits Better Antioxidant Activity than Typical and Waxy Genotypes

Estimation of organic matter digestibility, metabolizable energy, phenolic compounds and antioxidant activity of stems and seeds of the <i>Juncus acutus</i> plant in ruminant nutrition

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