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Authenticity tests of organic products (Golden Delicious and Elstar) applying sensory analysis

Ploeger, Prof. Dr. Angelika; Roeger, Monika and Weibel, Dr. Franco (2008) Authenticity tests of organic products (Golden Delicious and Elstar) applying sensory analysis. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

[thumbnail of Ploeger_12172_ed.doc] RTF (Rich Text Format) - German/Deutsch


In the governmental funded project BÖL-02OE170/F, apple samples from different farming systems (organic and conventional) were differentiated and classified by sensory evaluation. Samples from farm pairs derived from geographical neighbouring locations. Each farm pair consisted of one farm producing apples according to organic land use system and one producing conventionally. Factors of influence as growing conditions, climate, soil and harvest time were comparable within each pair.
For sensory evaluation, a descriptive analysis panel was trained according ISO-standards of descriptive analysis. The quantitative descriptive analysis method (QDA) enables to show a complete product profile with all sensory characteristics of a product as well as their intensity.
Over 2 crop periods (2004/2005), 18 apple samples (9 pairs) were evaluated by QDA method; 5 samples pairs of the variety “Golden Delicious” and 4 sample pairs of the variety “Elstar”, each with 3 replicates and 6 apples per replicate. In the first crop year, descriptive analysis was done to develop product profiles of all samples. Based on these data, a classification model was developed to classify sensory characteristics of organic vs. conventional apple cultivation. According to this model, from 9 defined trial sample pairs, 8 sample pairs could be classified according to the farming system in the second year.

EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:sensory evaluation, quantitative descriptive analysis, apple quality, BÖL, BOEL, FKZ 02OE170/F
Subjects: Food systems > Food security, food quality and human health
Research affiliation: International Conferences > 2008: IFOAM OWC: Research Track / ISOFAR > 4 QUALITY OF ORGANIC PRODUCTS
Related Links:http://www.bundesprogramm-oekolandbau.de, http://www.bundesprogramm.de/fkz=02OE170/F, https://orgprints.org/perl/search/advanced?addtitle%2Ftitle=&keywords=02OE170/F&projects=BOEL&_order=bypublication&_action_search=Suchen
Deposited By: Kahl, Dr. Johannes
ID Code:12172
Deposited On:02 Oct 2008
Last Modified:12 Apr 2010 07:36
Document Language:English
Refereed:Peer-reviewed and accepted
Additional Publishing Information:This paper is published in the conference proceedings:
Neuhoff, Daniel; Halberg, Niels; Alfldi, Thomas; Lockeretz, William; Thommen, Andreas; Rasmussen, Ilse A.; Hermansen, John; Vaarst, Mette; Lck, Lorna; Carporali, Fabio; Jensen, Henning Hgh; Migliorini, Paola and Willer, Helga, Eds. (2008) .Cultivating the Future Based on Science. Proceedings of the Second Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR), held at the 16th IFOAM Organic World Congress in Cooperation with the International Federation of Organic Agriculture Movements (IFOAM) and the Consorzio ModenaBio, 18 . 20 June 2008 in Modena, Italy.. International Society of Organic Agriculture Research (ISOFAR), c/o IOL, DE-Bonn, Research Institute of Organic Agriculture FiBL, CH-Frick. https://orgprints.org/13672 and https://orgprints.org/13674

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