EJPAU 2008. Ochmian I. , Skupień K. COMPARISON OF FIELD PERFORMANCE, FRUIT FIRMNESS, AND NUTRITIONAL VALUE OF YELLOW- AND RED-FRUIT POLISH RASPBERRY CULTIVARS

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 4

Topic:

Horticulture

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Ochmian I. , Skupień K. 2008. COMPARISON OF FIELD PERFORMANCE, FRUIT FIRMNESS, AND NUTRITIONAL VALUE OF YELLOW- AND RED-FRUIT POLISH RASPBERRY CULTIVARS, EJPAU 11(4), #19.
Available Online: http://www.ejpau.media.pl/volume11/issue4/abs-19.html

COMPARISON OF FIELD PERFORMANCE, FRUIT FIRMNESS, AND NUTRITIONAL VALUE OF YELLOW- AND RED-FRUIT POLISH RASPBERRY CULTIVARS

Ireneusz Ochmian¹, Katarzyna Skupień²
¹ Department of Horticulture, West Pomeranian University of Technology in Szczecin
² Laboratory of Plant Raw Materials Processing and Storage, Agricultural University, Szczecin, Poland

ABSTRACT

The objective of the two-year study was to compare a
field performance and chemical composition of red-fruit 'Polana' and yellow-fruit
'Poranna Rosa' primocane raspberry cultivars.

Regarding the yield, 'Polana' plants showed better productivity
(8.4 t ha^-1) compared to 'Poranna Rosa' (7.3 t ha^-1), although,
the latter was characterized by bigger fruits (on average 343 g and 309 g, respectively).
Moreover, 'Polana' berries displayed higher fruit firmness, higher soluble solids
(10.5%), higher total acid (4.1 g citric acid 100 mL^-1), and higher
vitamin C content (43.3 mg 100 mL^-1). Further, 'Polana' berries exhibited
higher amount of total polyphenols calculated on HPLC basis (44.98 mg 100g^-1),
mainly due to the lack of anthocyanins in 'Poranna Rosa' fruits. The red-fruit
'Polana' showed 40.69 mg anthocyanins per 100 g fresh weight with predominant
participation of cyanidin sophoroside (24.54 mg 100 g^-1) and cyanidin
glucoside (9.88 mg 100 g^-1). The content of ellagic acid in 'Poranna
Rosa' berries was significantly lower (1.46 mg 100 g¹) than in 'Polana'
fruit (2.09 mg 100 g^-1). Additionally, red raspberries overrated yellow
ones as far as N,P,K and Mg is concerned (16.31, 3.28, 11.73, and 1.45 g kg^-1,
respectively), but both cultivars showed the same concentration of Ca, Fe, and
Zn (0.43 g kg^-1, 110.0 and 22.0 mg kg^-1, respectively).

In general, red-fruit 'Polana' berries showed better
productivity, harder fruits (more resistant for handling), and were found a richer
source both of nutritional and biologically active constituents.

Key words: yield, fruit chemical constituents, anthocyanins, flavonols, ellagic acid.

Ireneusz Ochmian
Department of Horticulture, West Pomeranian University of Technology in Szczecin
phone +48 91 449 61 61
Słowackiego 17, 71-434 Szczecin
POLAND
email: ochir@o2.pl

Katarzyna Skupień
Laboratory of Plant Raw Materials Processing and Storage,
Agricultural University, Szczecin, Poland
Słowackiego 17, 71-434 Szczecin, Poland
Phone: (+48 91) 425-03-43
email: kskupien@agro.ar.szczecin.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.