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How soil type (gypsum or limestone) influences the properties and composition of thyme honey

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ABSTRACT

Background and aims: The objective of this work was to determine the influence of the soil substrate on the characteristics and properties of a specific type of honey. As such, we analysed the features of a typical single-flower honey, thyme honey, produced in a specific Mediterranean region. Thymus is a genus of aromatic perennial plants that are native to Europe, North Africa and Asia.

Methods: A total of 70 honey samples from hives situated on limestone (38 samples) or gypsum soils (32 samples) were studied. The physical and chemical properties of each samples were analyzed using standard assays.

Results: Within the same geographical area and despite a similar thyme pollen content, we observed variation in the physicochemical, antioxidant and sensorial characteristics of monofloral honeys. The quantification of certain physicochemical parameters of the honey indicated these features were influenced by the soil type. Indeed, the soil type of the hives’ settlement area, limestone or gypsum, influences the conductivity, antioxidant capacity, colour and floristic composition.

Conclusions: The present work demonstrates that soil type (gypsum or limestone) influences the characteristics of honey, potentially providing added market value to these products.

Electronic supplementary material: The online version of this article (doi:10.1186/s40064-016-3243-9) contains supplementary material, which is available to authorized users.

No MeSH data available.


Representation of pollen types and physicochemical variables that determine both honey productions in the two productions of honey
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Fig7: Representation of pollen types and physicochemical variables that determine both honey productions in the two productions of honey

Mentions: Of the 27 physicochemical variables measured, those carried out on all the samples were selected for analysis taking into account the available relevant literature. Moreover, we considered the variables associated with a correlation coefficient greater than 70 % with conductivity. For variables that were virtually identical, such as the free acidity and antioxidant capacity, only one of them was analysed. In terms of the pollen spectrum, a selection was made on the basis of their presence in the different types of honey. Based on these considerations and after preliminary analysis, a total of 5 of physicochemical variables and 17 related to the nature of the pollen were used in the different analyses of the 70 samples. Using these variables produced a clear segregation of the honey samples into two groups (Fig. 7).Fig. 7


How soil type (gypsum or limestone) influences the properties and composition of thyme honey
Representation of pollen types and physicochemical variables that determine both honey productions in the two productions of honey
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5037098&req=5

Fig7: Representation of pollen types and physicochemical variables that determine both honey productions in the two productions of honey
Mentions: Of the 27 physicochemical variables measured, those carried out on all the samples were selected for analysis taking into account the available relevant literature. Moreover, we considered the variables associated with a correlation coefficient greater than 70 % with conductivity. For variables that were virtually identical, such as the free acidity and antioxidant capacity, only one of them was analysed. In terms of the pollen spectrum, a selection was made on the basis of their presence in the different types of honey. Based on these considerations and after preliminary analysis, a total of 5 of physicochemical variables and 17 related to the nature of the pollen were used in the different analyses of the 70 samples. Using these variables produced a clear segregation of the honey samples into two groups (Fig. 7).Fig. 7

View Article: PubMed Central - PubMed

ABSTRACT

Background and aims: The objective of this work was to determine the influence of the soil substrate on the characteristics and properties of a specific type of honey. As such, we analysed the features of a typical single-flower honey, thyme honey, produced in a specific Mediterranean region. Thymus is a genus of aromatic perennial plants that are native to Europe, North Africa and Asia.

Methods: A total of 70 honey samples from hives situated on limestone (38 samples) or gypsum soils (32 samples) were studied. The physical and chemical properties of each samples were analyzed using standard assays.

Results: Within the same geographical area and despite a similar thyme pollen content, we observed variation in the physicochemical, antioxidant and sensorial characteristics of monofloral honeys. The quantification of certain physicochemical parameters of the honey indicated these features were influenced by the soil type. Indeed, the soil type of the hives’ settlement area, limestone or gypsum, influences the conductivity, antioxidant capacity, colour and floristic composition.

Conclusions: The present work demonstrates that soil type (gypsum or limestone) influences the characteristics of honey, potentially providing added market value to these products.

Electronic supplementary material: The online version of this article (doi:10.1186/s40064-016-3243-9) contains supplementary material, which is available to authorized users.

No MeSH data available.