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Folate content in strawberries (Fragina x ananassa): Effects of cultivar, ripeness, year of harvest, storage, and commercial processing.

Strålsjö, L M; Witthoft, C M; Sjöholm, Ingegerd LU and Jägerstad, M I (2003) In Journal of Agricultural and Food Chemistry 51(1). p.128-133
Abstract
Folate concentrations in strawberries and folate retention during storage and commercial processing of strawberries were investigated. No previous study has focused on the effects of cultivar, ripeness, and year of harvest of strawberries with respect to the folate content. This study showed the folate concentration in strawberries to significantly depend on all of these different factors. Total folate was quantified using a modified and validated radioprotein-binding assay with external calibration (5-CH3-H4folate). Folate content in 13 different strawberry cultivars varied from 335 g/100 g of dry matter (DM) for cv. Senga Sengana to 644 g/100 g of DM for cv. Elsanta. Swedish harvests from 1999 and 2001 yielded higher folate... (More)
Folate concentrations in strawberries and folate retention during storage and commercial processing of strawberries were investigated. No previous study has focused on the effects of cultivar, ripeness, and year of harvest of strawberries with respect to the folate content. This study showed the folate concentration in strawberries to significantly depend on all of these different factors. Total folate was quantified using a modified and validated radioprotein-binding assay with external calibration (5-CH3-H4folate). Folate content in 13 different strawberry cultivars varied from 335 g/100 g of dry matter (DM) for cv. Senga Sengana to 644 g/100 g of DM for cv. Elsanta. Swedish harvests from 1999 and 2001 yielded higher folate concentrations than did the harvest from 2000, and the grade of ripeness affected the folate content in strawberries. This study indicated high folate retention in intact berries during storage until 3 or 9 days at 4 C (71-99%) and also in most tested commercial products (79-103%). On the basis of these data fresh strawberries as well as processed strawberry products are recommended to be good folate sources. For instance, 250 g (fresh weight) of strawberries (~125 g of folate) supplies ~50% of the recommended daily folate intake in various European countries (200-300 g/day) or 30% of the U.S. recommendation (400 g/day). (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Agricultural and Food Chemistry
volume
51
issue
1
pages
128 - 133
publisher
The American Chemical Society
external identifiers
  • pmid:12502396
  • wos:000180194500021
  • scopus:0037227938
ISSN
0021-8561
DOI
10.1021/jf020699n
language
English
LU publication?
yes
id
48ddb074-1a1e-45a1-8396-6441e07960d6 (old id 129476)
date added to LUP
2007-07-19 10:56:23
date last changed
2018-08-26 03:31:06
@article{48ddb074-1a1e-45a1-8396-6441e07960d6,
  abstract     = {Folate concentrations in strawberries and folate retention during storage and commercial processing of strawberries were investigated. No previous study has focused on the effects of cultivar, ripeness, and year of harvest of strawberries with respect to the folate content. This study showed the folate concentration in strawberries to significantly depend on all of these different factors. Total folate was quantified using a modified and validated radioprotein-binding assay with external calibration (5-CH3-H4folate). Folate content in 13 different strawberry cultivars varied from 335 g/100 g of dry matter (DM) for cv. Senga Sengana to 644 g/100 g of DM for cv. Elsanta. Swedish harvests from 1999 and 2001 yielded higher folate concentrations than did the harvest from 2000, and the grade of ripeness affected the folate content in strawberries. This study indicated high folate retention in intact berries during storage until 3 or 9 days at 4 C (71-99%) and also in most tested commercial products (79-103%). On the basis of these data fresh strawberries as well as processed strawberry products are recommended to be good folate sources. For instance, 250 g (fresh weight) of strawberries (~125 g of folate) supplies ~50% of the recommended daily folate intake in various European countries (200-300 g/day) or 30% of the U.S. recommendation (400 g/day).},
  author       = {Strålsjö, L M and Witthoft, C M and Sjöholm, Ingegerd and Jägerstad, M I},
  issn         = {0021-8561},
  language     = {eng},
  number       = {1},
  pages        = {128--133},
  publisher    = {The American Chemical Society},
  series       = {Journal of Agricultural and Food Chemistry},
  title        = {Folate content in strawberries (Fragina x ananassa): Effects of cultivar, ripeness, year of harvest, storage, and commercial processing.},
  url          = {http://dx.doi.org/10.1021/jf020699n},
  volume       = {51},
  year         = {2003},
}