WorldCat Identities

Thrasyvoulou, Andreas

Overview
Works: 5 works in 5 publications in 1 language and 5 library holdings
Publication Timeline
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Most widely held works by Andreas Thrasyvoulou
Correlations of sensory parameters with physicochemical characteristics of Argentinean honeys by multivariate statistical techniques( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Honey acceptability is mainly determined by its colour, crystallisation degree and aroma. In the present work, the sensory characteristics and physicochemical parameters of Argentinean honeys from different ecoregions were analysed. Moisture content, Pfund colour, diastase activity, hydroxymethylfurfural content, electrical conductivity, sugar profile and volatile compounds were analytically determined in honey samples, while sensory characteristics (crystal size, fluency score, sweetness, persistence, granularity, crystallisation, colour intensity and aroma) were evaluated by a trained panel. Significant correlations were found between honey crystallisation degree and hydroxymethylfurfural content and diastase activity (P d" 0.05). It could be confirmed that honey crystallisation interferes with the visual perception of colour. Floral, fresh fruit, ripe fruit, balsamic and wood aromas could be successfully linked to honey volatile profile (P d" 0.05). These results demonstrate that the parameters that could best guarantee the consumers' preference can be successfully associated with the chemical composition of honey by multivariate statistical analysis. Abstract : Correlations of sensory parameters with physicochemical characteristics
Impact of honey bee (Apis mellifera L.) density on wild bee foraging behaviour( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

Rearing drones in queen cells of Apis mellifera honey bees( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

The determination of the botanical origin in honeys with over-represented pollen: combination of melissopalynological, sensory and physicochemical analysis( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Abstract: BACKGROUND: Pollen analysis of honey is the basic method for the determination of its botanical origin. However, the presence of over-represented pollen in honeys may lead the analysis to false results. This can be more severe if this pollen is present in unifloral under-represented honeys of commercial importance (e.g. thyme honey). In the present study, we investigated the abundance of over-represented pollen grains on several quality characteristics in honey samples. In particular, we mixed honeys characterised as over-represented, specifically chestnut and eucalyptus, with thyme honeys in different analogies, and we also analysed the melissopalynological, organoleptic, physicochemical (water content, electrical conductivity, colour) and volatile characteristics of the blends. RESULTS: The most sensitive parameters were the microscopic characteristics, followed by the organoleptic ones. Blends of thyme honey with an originally low percentage of thyme pollen were the most influenced and could not be characterised as unifloral regarding their melissopalynological characteristics, even when they were mixed with small quantities of honeys with over-represented pollen (i.e. 5%). CONCLUSION: The present study confirms that, in the case of presence of over-represented pollen in honeys, pollen analysis alone cannot give trustworthy results for the determination of the botanical origin, even though their exclusion during pollen analysis, when they are present in percentages of up to 30%, could provide more accurate results. Consequently, pollen analysis should also be combined with the other analyses, especially in honeys with under-represented and over-represented pollens, to give safer results for the botanical characterisation of honeys. © 2017 Society of Chemical Industry
 
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