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Total antioxidant capacity and content of flavonoids and other phenolic compounds in canihua (Chenopodium pallidicaule): An Andean pseudocereal

Penarrieta, Mauricio LU ; Alvarado, J. Antonio; Åkesson, Björn LU and Bergenståhl, Björn LU (2008) In Molecular Nutrition and Food Research 52(6). p.708-717
Abstract
Total antioxidant capacity (TAC), total phenolic compounds (TPH), total flavonoids (TF) and individual phenolic compounds were determined in canihua collected at approx. 3850 in altitude. The TAC values varied among samples from 2.7 to 44.7 by the ferric reducing antioxidant power (FRAP) method and from 1.8 to 41 by the 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) method expressed as mu mol of Trolox equivalents/g dw. The content of TPH was 12.4-71.2 mu mol gallic acid equivalents/g dw and that of the TF ranged between 2.2 and 11.4 mu mol of catechin equivalents/g dw. The data obtained by the four methods showed several significant Correlations. Prior to analysis by HPLC, the samples were subjected to acid hydrolysis and... (More)
Total antioxidant capacity (TAC), total phenolic compounds (TPH), total flavonoids (TF) and individual phenolic compounds were determined in canihua collected at approx. 3850 in altitude. The TAC values varied among samples from 2.7 to 44.7 by the ferric reducing antioxidant power (FRAP) method and from 1.8 to 41 by the 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) method expressed as mu mol of Trolox equivalents/g dw. The content of TPH was 12.4-71.2 mu mol gallic acid equivalents/g dw and that of the TF ranged between 2.2 and 11.4 mu mol of catechin equivalents/g dw. The data obtained by the four methods showed several significant Correlations. Prior to analysis by HPLC, the samples were subjected to acid hydrolysis and in the water-soluble extracts this led to an up to 20-fold increase in the TAC values in comparison with the values of the nonhydrolysed samples. HPLC analysis showed the presence of eight major compounds identified as catechin gallate, catechin, vanillic acid, kaempferol, ferulic acid, quercetin, resorcinol and 4-methylresorcinol. Their estimated contribution to the TAC value (FRAP method) indicated that resorcinols contributed most of the antioxidant capacity of the water-soluble extract. The results show that canihua is a potential source of natural antioxidant compounds and other bioactive compounds which can be important for human health. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
phenolic compounds, flavonoids, canihua, antioxidants, Bolivia
in
Molecular Nutrition and Food Research
volume
52
issue
6
pages
708 - 717
publisher
John Wiley & Sons
external identifiers
  • wos:000256983900009
  • scopus:49649083852
ISSN
1613-4133
DOI
10.1002/mnfr.200700189
language
English
LU publication?
yes
id
ac4f2514-8c6c-4a4b-8c22-186b9c941745 (old id 1190585)
date added to LUP
2008-09-03 14:40:36
date last changed
2017-11-05 03:43:21
@article{ac4f2514-8c6c-4a4b-8c22-186b9c941745,
  abstract     = {Total antioxidant capacity (TAC), total phenolic compounds (TPH), total flavonoids (TF) and individual phenolic compounds were determined in canihua collected at approx. 3850 in altitude. The TAC values varied among samples from 2.7 to 44.7 by the ferric reducing antioxidant power (FRAP) method and from 1.8 to 41 by the 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) method expressed as mu mol of Trolox equivalents/g dw. The content of TPH was 12.4-71.2 mu mol gallic acid equivalents/g dw and that of the TF ranged between 2.2 and 11.4 mu mol of catechin equivalents/g dw. The data obtained by the four methods showed several significant Correlations. Prior to analysis by HPLC, the samples were subjected to acid hydrolysis and in the water-soluble extracts this led to an up to 20-fold increase in the TAC values in comparison with the values of the nonhydrolysed samples. HPLC analysis showed the presence of eight major compounds identified as catechin gallate, catechin, vanillic acid, kaempferol, ferulic acid, quercetin, resorcinol and 4-methylresorcinol. Their estimated contribution to the TAC value (FRAP method) indicated that resorcinols contributed most of the antioxidant capacity of the water-soluble extract. The results show that canihua is a potential source of natural antioxidant compounds and other bioactive compounds which can be important for human health.},
  author       = {Penarrieta, Mauricio and Alvarado, J. Antonio and Åkesson, Björn and Bergenståhl, Björn},
  issn         = {1613-4133},
  keyword      = {phenolic compounds,flavonoids,canihua,antioxidants,Bolivia},
  language     = {eng},
  number       = {6},
  pages        = {708--717},
  publisher    = {John Wiley & Sons},
  series       = {Molecular Nutrition and Food Research},
  title        = {Total antioxidant capacity and content of flavonoids and other phenolic compounds in canihua (Chenopodium pallidicaule): An Andean pseudocereal},
  url          = {http://dx.doi.org/10.1002/mnfr.200700189},
  volume       = {52},
  year         = {2008},
}