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Agronomy
Volume 11
Issue 2
10.3390/agronomy11020317
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Article

Protein Hydrolysates Supplement in the Nutrient Solution of Soilless Grown Fresh Peppermint and Spearmint as a Tool for Improving Product Quality

by
Danai-Christina Aktsoglou
1,
Dimitrios S. Kasampalis
1,
Eirini Sarrou
2,
Pavlos Tsouvaltzis
1,*,
Paschalina Chatzopoulou
2,
Stefan Martens
3 and
Anastasios S. Siomos
1
1
Department of Horticulture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
2
Hellenic Agricultural Organization DEMETER, Institute of Plant Breeding and Genetic Resources, Department of Medicinal and Aromatic Plants, Thermi, 57001 Thessaloniki, Greece
3
Fondazione Edmund Mach, Research and Innovation Centre, Via E. Mach 1, 38098 San Michele all’Adige (TN), Italy
*
Author to whom correspondence should be addressed.
Agronomy 2021, 11(2), 317; https://doi.org/10.3390/agronomy11020317
Submission received: 26 January 2021 / Revised: 5 February 2021 / Accepted: 9 February 2021 / Published: 11 February 2021
(This article belongs to the Special Issue Biostimulants as Physiological Modulators of Crop Performance and Product Quality)
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Abstract

The present study investigated the potential of fresh peppermint (Mentha × piperita L.) and spearmint (Menthaspicata L.) production on a floating raft system combined with a commercial protein hydrolysate supplement (Amino16®) in a nutrient solution aiming to improve plant product quality. Three levels of the protein hydrolysate solution (0, 0.25 and 0.50%) were added in the nutrient solution, and the plants were harvested after twenty-four days. Plant growth characteristics were recorded, and nutritional, essential oil and polyphenolic composition were determined in fresh tissue. The addition of protein hydrolysates did not affect the fresh or dry weight but reduced plant height. Nitrate content significantly decreased, while total chlorophyll and essential oil content increased in both species. Moreover, the protein hydrolysate solution further increased total antioxidant capacity, total soluble phenol and carotenoid contents in spearmint plants, while it did not affect the essential oil and polyphenolic composition in both species. In conclusion, protein hydrolysates solution may be added in the nutrient solution, to improve the quality of peppermint and spearmint grown in a floating system, without adverse effects on crop yield or the essential oil and polyphenolic profile.
Keywords: amino acid solution; bio-stimulant; hydroponics; secondary metabolite amino acid solution; bio-stimulant; hydroponics; secondary metabolite

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MDPI and ACS Style

Aktsoglou, D.-C.; Kasampalis, D.S.; Sarrou, E.; Tsouvaltzis, P.; Chatzopoulou, P.; Martens, S.; Siomos, A.S. Protein Hydrolysates Supplement in the Nutrient Solution of Soilless Grown Fresh Peppermint and Spearmint as a Tool for Improving Product Quality. Agronomy 2021, 11, 317. https://doi.org/10.3390/agronomy11020317

AMA Style

Aktsoglou D-C, Kasampalis DS, Sarrou E, Tsouvaltzis P, Chatzopoulou P, Martens S, Siomos AS. Protein Hydrolysates Supplement in the Nutrient Solution of Soilless Grown Fresh Peppermint and Spearmint as a Tool for Improving Product Quality. Agronomy. 2021; 11(2):317. https://doi.org/10.3390/agronomy11020317

Chicago/Turabian Style

Aktsoglou, Danai-Christina, Dimitrios S. Kasampalis, Eirini Sarrou, Pavlos Tsouvaltzis, Paschalina Chatzopoulou, Stefan Martens, and Anastasios S. Siomos. 2021. "Protein Hydrolysates Supplement in the Nutrient Solution of Soilless Grown Fresh Peppermint and Spearmint as a Tool for Improving Product Quality" Agronomy 11, no. 2: 317. https://doi.org/10.3390/agronomy11020317

APA Style

Aktsoglou, D.-C., Kasampalis, D. S., Sarrou, E., Tsouvaltzis, P., Chatzopoulou, P., Martens, S., & Siomos, A. S. (2021). Protein Hydrolysates Supplement in the Nutrient Solution of Soilless Grown Fresh Peppermint and Spearmint as a Tool for Improving Product Quality. Agronomy, 11(2), 317. https://doi.org/10.3390/agronomy11020317

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