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Ministerium für Landwirtschaft, Umwelt und Klimaschutz
Brandenburg und Berlin
Postfach 60 11 50
14411 Potsdam
Website: External link to the authority
Sustainable intensified cultivating and manufacturing processes for a stable production of Spreewald gherkins (PGI)
The Spreewald gherkin is a protected geographical indication (PGI) in Brandenburg. Its share of the market of processed gherkins is about 18 %. Phytopathogens and pests lead to frequent yield losses of gherkins. Furthermore the food retailing has complained about soft lots of tins with pasteurized gherkins. The project aims to develop solutions for the entire process flow, in order to ensure quality and quantity of raw gherkins from production of raw products to processing. Yield losses of raw gherkins should be reduced by developing a cultivation strategy to minimize influences of pathogens (especially different fungi and European red mite). In addition, the aim of the project is to solve problems during preserving Spreewald gherkins (PGI). For instance the reasons for softening of gherkins in tins shall be identified. Therefor the development of indicators for adverse selection of raw material batches and of a time-lapse testing is necessary. The results shall be presented in the form of recommendations for practitioners.
Causes for the softening of gherkins in tins could be identified. Storage trials showed that cucumbers with untypical light discolouration at the tips, later as gherkins in tins, exhibited a decrease in texture. After 6 months of storage, the crispness of the gherkins infected with zucchini yellow mosaic virus (ZYMV) also decreased. Drought stress and waterlogging, as well as the associated occurrence of Alternaria, can form a negative causal complex with a ZYMV occurrence. In the course of processing, raw cucumbers above 7 °C storage temperature and pasteurised gherkins above 30 °C storage temperature lost significantly in crunchiness and firmness. The ingredients for gherkin production or fungal pathogens had no influence on softening. There were also only minor differences between the varieties. Recommendations for action were developed and a rapid test method for pasteurised gherkins was developed.
Rural development 2014-2020
Gurkenhof Frehn
Schöneiche 11
15938 Steinreich
Phone: 035452 15 7 21
Email: heinz-peter.frehn@gurkenhof-frehn.de
2017
completed
1,208,924
DE406 Dahme-Spreewald
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