BACKGROUND: Robinia pseudoacacia L. nectar and its derivative monofloral honey were systematically compared in this study, to understand how much the starting solution reflected the final product, after re-elaboration by Apis mellifera ligustica Spinola. RESULTS: Subjected to dehydration in the hive, nectar changed in its water and sugar content when transformed into honey, as physicochemical and gas chromatographic–mass spectrometric analyses revealed. Spectrophotometric measurements and characterization by high-performance liquid chromatography–diode array detection of 18 plant molecules demonstrated honey to be richer than nectar in secondary metabolites. For the first time, the hypothesis of the existence of a nectar redox cycle in R. pseudoacacia was reported, as previously described for Nicotiana sp., based on 1D-protein profiles, western blot analysis and detection of H2O2and ascorbate. The bioactivity of both matrices was also investigated. Antiradical in vitro tests showed that Acacia honey was more antioxidant than nectar, which was even able to induce oxidative stress directly in a eukaryotic cell system. Antimicrobial assays demonstrated that nectar was bacteriostatic, due to H2O2activity, whereas honey was even bactericidal. CONCLUSION: All these data support the ecological role of nectar and honey in nature: protection of the gynoecium from pathogens and preservation from degradative processes, respectively. © 2018 Society of Chemical Industry.

Gismondi, A., De Rossi, S., Canuti, L., Novelli, S., Di Marco, G., Fattorini, L., et al. (2018). From Robinia pseudoacacia L. nectar to Acacia monofloral honey: biochemical changes and variation of biological properties. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, 98(11), 4312-4322 [10.1002/jsfa.8957].

From Robinia pseudoacacia L. nectar to Acacia monofloral honey: biochemical changes and variation of biological properties

Gismondi, Angelo;Canuti, Lorena;Novelli, Silvia;Di Marco, Gabriele;Canini, Antonella
2018

Abstract

BACKGROUND: Robinia pseudoacacia L. nectar and its derivative monofloral honey were systematically compared in this study, to understand how much the starting solution reflected the final product, after re-elaboration by Apis mellifera ligustica Spinola. RESULTS: Subjected to dehydration in the hive, nectar changed in its water and sugar content when transformed into honey, as physicochemical and gas chromatographic–mass spectrometric analyses revealed. Spectrophotometric measurements and characterization by high-performance liquid chromatography–diode array detection of 18 plant molecules demonstrated honey to be richer than nectar in secondary metabolites. For the first time, the hypothesis of the existence of a nectar redox cycle in R. pseudoacacia was reported, as previously described for Nicotiana sp., based on 1D-protein profiles, western blot analysis and detection of H2O2and ascorbate. The bioactivity of both matrices was also investigated. Antiradical in vitro tests showed that Acacia honey was more antioxidant than nectar, which was even able to induce oxidative stress directly in a eukaryotic cell system. Antimicrobial assays demonstrated that nectar was bacteriostatic, due to H2O2activity, whereas honey was even bactericidal. CONCLUSION: All these data support the ecological role of nectar and honey in nature: protection of the gynoecium from pathogens and preservation from degradative processes, respectively. © 2018 Society of Chemical Industry.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore BIO/01
English
antimicrobial effect; antioxidant property; black locust; gynoecium protection; honeybee; nectar redox cycle; Acacia; Animals; Antioxidants; Bees; Chromatography, High Pressure Liquid; Flavonoids; Flowers; Honey; Phenols; Plant Nectar; Robinia; Biotechnology; Food Science; Agronomy and Crop Science; Nutrition and Dietetics
http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-0010
Gismondi, A., De Rossi, S., Canuti, L., Novelli, S., Di Marco, G., Fattorini, L., et al. (2018). From Robinia pseudoacacia L. nectar to Acacia monofloral honey: biochemical changes and variation of biological properties. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, 98(11), 4312-4322 [10.1002/jsfa.8957].
Gismondi, A; De Rossi, S; Canuti, L; Novelli, S; Di Marco, G; Fattorini, L; Canini, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/202747
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