EJPAU 2008. Wojdyła T. , Pobereżny J. , Rogozińska I. CHANGES IN VITAMIN C CONTENT IN SELECTED FRUITS AND VEGETABLES SUPPLIED FOR SALE IN THE AUTUMN-WINTER PERIOD

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2008
Volume 11
Issue 2

Topic:

Horticulture

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Wojdyła T. , Pobereżny J. , Rogozińska I. 2008. CHANGES IN VITAMIN C CONTENT IN SELECTED FRUITS AND VEGETABLES SUPPLIED FOR SALE IN THE AUTUMN-WINTER PERIOD, EJPAU 11(2), #13.
Available Online: http://www.ejpau.media.pl/volume11/issue2/abs-13.html

CHANGES IN VITAMIN C CONTENT IN SELECTED FRUITS AND VEGETABLES SUPPLIED FOR SALE IN THE AUTUMN-WINTER PERIOD

Tadeusz Wojdyła, Jarosław Pobereżny, Ilona Rogozińska
Department of Storage and Processing of Plant Products, University of Technology and Life Sciences in Bydgoszcz, Poland

ABSTRACT

Studies on vitamin C content were conducted on plant material (fruits, vegetables) from the producers who supplied the products to the network of retail trade in Bydgoszcz. The products were stored in storage rooms where vitamin C content was determined in 14-day-long intervals using Tillmans’ method according to PN-A-04019:1008. Differentiated content of vitamin C (ranging from 4.0 to 146.1 mg·100 g^-1 of fresh weight) depended on the analyzed cultivar and in case of apples, pears, cucumbers, Italian broccoli, yellow paprika, onion and white cabbage on the date of estimation. The daily demand of an adult organism for vitamin C, on average from November till February, is covered (with theoretical assumptions) by the consumption of 80 g of yellow paprika, 80 g of cauliflower and 100 g of white cabbage. The calculated variability coefficients for vitamin C content in fruits and vegetables pointed to the greatest stability for cauliflower (1.8%), and the lowest for onion (12.9%), apples (14.2%) and pears (30.4%).

Key words: fruits, vegetables, vitamin C, date of estimation, stability.

Tadeusz Wojdyła
Department of Storage and Processing of Plant Products,
University of Technology and Life Sciences in Bydgoszcz, Poland
Ks. Kordeckiego 20, 85-225 Bydgoszcz, Poland
Phone: (+48 52) 374 93 20
email: wojdyla@atr.bydgoszcz.pl

Jarosław Pobereżny
Department of Storage and Processing of Plant Products,
University of Technology and Life Sciences in Bydgoszcz, Poland
Ks. Kordeckiego 20, 85-225 Bydgoszcz, Poland
Phone: (+48 52) 374 93 45
email: poberezny@atr.bydgoszcz.pl

Ilona Rogozińska
Department of Storage and Processing of Plant Products,
University of Technology and Life Sciences in Bydgoszcz, Poland
Ks. Kordeckiego 20, 85-225 Bydgoszcz, Poland
Phone: (+48 52) 374 93 88
email: ilonarog@utp.edu.pl

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.