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Annual Research & Review in Biology, ISSN: 2347-565X,Vol.: 27, Issue.: 5

Original-research-article

Vitamin C and Total Antioxidant Content in Pepper Fruits (Capsicum annuum L.): Comparative Analysis of Peppers Grown in Conventional and Organic Agricultural Systems

 

Olivera Bicikliski1*, Fidanka Trajkova1, Ljupco Mihajlov1, Suzana Jordanovska2 and Krste Tashev3

1Faculty of Agriculture, Goce Delcev University, Krste Misirkov, 10-A, P.O.Box 201, 2000 Stip, Republic of Macedonia.

2Institute of Agriculture, Skopje, 16th Macedonian Brigade, 3A, 1000 Skopje, Republic of Macedonia.

3State Phytosanitary Laboratory, Aleksandar Makedonski B.B., 1000 Skopje, Republic of Macedonia.

Article Information

Editor(s):

(1) Dr. George Perry, Dean and Professor of Biology, University of Texas at San Antonio, USA.

Reviewers:

(1) Tabe Franklin Nyenty, University of Ngaoundere, Cameroon.

(2) Zoran S. Ilić, University of Kosovska Mitrovica, Serbia.

Complete Peer review History: http://www.sciencedomain.org/review-history/25513

Abstracts

Up-to-date, there is no methodical and long-term research on fruit quality and nutritional characteristics of peppers grown in organic production system in Republic of Macedonia. Still, there are debates in broad sense about the advantage of organic vegetable production compared to conventional one in terms of quality characteristics. Led by this idea, this research was conducted with an aim to study vitamin C content and total antioxidant content in fruits of six pepper genotypes as most important fruit quality characteristics and to determine if there are differences in fruit quality properties between those grown in organic and conventional production system.

Fruits of six different pepper genotypes Strumicka Kapija, Strumicka Vezena, Piran, Zupska Rana, Duga Bela and Kurtovska Kapija cultivated in organic and conventional production systems were used for determination of vitamin C and total antioxidant content. The extraction of vitamin C and total antioxidants were performed in a plant tissue extractor with orthophosphoric acid and methanol as extracting reagents, respectively. Vitamin C content was determined by HPLC instrument, while total antioxidant content was measured with potentionstat instrument.

The genotype Strumicka Kapija was characterized with the highest content of vitamin C in both cultivation systems. In all genotypes under study, except Zupska Rana, the vitamin C content was higher in fruits from organic production as compared to pepper fruits from the conventional system. Generally, the total antioxidant content in pepper fruits from the conventional system was averagely lower than the total antioxidant content measured in pepper fruits from the organic production system. These findings are a prove that production system is very important for the fruit quality characteristic and the organic production of peppers results with production of fruits with higher content of vitamin C and antioxidants compared to conventional ones, therefore organic peppers give more nutrition and health benefits to consumers.

Keywords :

Capsicum annuum L.; pepper; vitamin C; antioxidants; organic cultivation system; conventional cultivation system.

Full Article - PDF    Page 1-11

DOI : 10.9734/ARRB/2018/42851

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