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Volumn 20, Issue 14, 2010, Pages 4266-4272

Antioxidative activities of histidine containing caffeic acid-dipeptides

Author keywords

Antioxidant; Antioxidative activity; Caffeic acid; Caffeic acid histidine dipeptides

Indexed keywords

1,1 DIPHENYL 2 PICRYLHYDRAZYL; ANTIOXIDANT; CAFFEIC ACID; CAFFEIC ACID ALANINE HISTIDINE AMIDE; CAFFEIC ACID ASPARTATE HISTIDINE AMIDE; CAFFEIC ACID BETA ALANINE HISTIDINE AMIDE; CAFFEIC ACID CYSTEINE HISTIDINE AMIDE; CAFFEIC ACID HISTIDINE ALANINE AMIDE; CAFFEIC ACID HISTIDINE AMIDE; CAFFEIC ACID HISTIDINE ASPARTATE AMIDE; CAFFEIC ACID HISTIDINE BETA ALANINE AMIDE; CAFFEIC ACID HISTIDINE CYSTEINE AMIDE; CAFFEIC ACID HISTIDINE DIPEPTIDE CONJUGATE; CAFFEIC ACID HISTIDINE HISTIDINE AMIDE; CAFFEIC ACID HISTIDINE LYSINE AMIDE; CAFFEIC ACID HISTIDINE PHENYLALANINE AMIDE; CAFFEIC ACID HISTIDINE PROLINE AMIDE; CAFFEIC ACID HISTIDINE SERINE AMIDE; CAFFEIC ACID LYSINE HISTIDINE AMIDE; CAFFEIC ACID PHENYLALANINE AMIDE; CAFFEIC ACID PHENYLALANINE HISTIDINE AMIDE; CAFFEIC ACID PROLINE HISTIDINE AMIDE; CAFFEIC ACID SERINE HISTIDINE AMIDE; DIPEPTIDE; IRON THIOCYANATE; SCAVENGER; THIOCYANATE; UNCLASSIFIED DRUG;

EID: 77953871983     PISSN: 0960894X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.bmcl.2010.04.135     Document Type: Article
Times cited : (33)

References (51)
  • 33
    • 77953872018 scopus 로고    scopus 로고
    • note
    • 2) were obtained and identified using the same procedure as CA-His dipeptides.
  • 34
    • 77953870773 scopus 로고    scopus 로고
    • note
    • Calculation of Log P and Log S of CA-His dipeptides: The partitioning coefficient, Log P, was calculated using ChemDraw Ultra (CambridgeSoft). Additionally, the aqueous solubility (Log S) was calculated using online-Log P/Log S calculation software, ALOGPS 2.1 (www.vcclab.org/lab/alogps/).
  • 38
    • 77953872673 scopus 로고    scopus 로고
    • note
    • 516 nm (t = 0)] × 100. The negative control was a mixture of 0.1 mM methanolic DPPH solution (1480 μL) and 20 μL of methanol instead of the samples. All of the experiments were performed in triplicate and averaged.
  • 42
    • 77953869983 scopus 로고    scopus 로고
    • note
    • Determination of radical scavenging activity in various solvent systems: The %RSA of the selected antioxidants was also evaluated under different solvent systems such as tert-butanol, acetonitrile or acetate buffered methanol (pH 5.5). The DPPH solution with acetonitrile and tert-butanol was prepared in the same way as the aforementioned methanolic DPPH solution. The buffered methanolic DPPH solution was prepared in the mixture of pH 5.5 acetate buffer, making its final concentration 0.1 mM.
  • 45
    • 77953872613 scopus 로고    scopus 로고
    • note
    • 20 Five independent measurements were performed, and each experiment was run in triplicate. The control experiment without antioxidant was repeated 10 times in order to define the oxidation curve in the lipid emulsified autoxidation system. The absorbance of the negative control reached approximately 1 (1.059-1.092) at 10 h, and continued to increase up to a value of approximately 2 (1.824-2.112) at 48 h before decreasing again. The antioxidative activity of the compounds was delineated in terms of the ability to restrict the early stage of the lipid peroxidation (Fig. 3) because alkylperoxyl radicals were spontaneously induced in air. The percentage of lipid peroxidation inhibition (%Pi) was calculated when the absorbance at 500 nm of the control (without antioxidant) reached approximately 1.
  • 51
    • 77953871318 scopus 로고    scopus 로고
    • note
    • 48 Sodium phosphate buffer (0.1 M, pH 7.5, 580 μL), 20 μL of xanthine oxidase from cow's milk obtained from Aldrich, and 200 μL of the 0.7 mM test samples were mixed in an Eppendorf tube at 25 °C for 15 min. Then, 400 μL of 0.15 mM xanthine solution was treated for 30 min at 25 °C, and was quenched by 100 μL of 1 N HCl. The absorbance of the reaction mixture was measured at 290 nm. Three independent measurements were performed, and each experiment was run in triplicate. The percentage of xanthine oxidase inhibitory activity was calculated when the absorbance at 290 nm of the control (without antioxidant) reached approximately 2.5 (2.547-2.558).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.