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The amino acid composition of 53 honey samples from Spain, consisting of 39 floral, 5 honeydew, and 9 blend honeys, has been determined. Physicochemical characteristics, polyphenolic content, amino acid composition, and estimation of the radical scavenging capacity against the stable free radical DPPH of the honey samples were analyzed. The resulting data… (More)
With the aim of finding methods that could constitute a solid alternative to melissopalynological and physicochemical analyses to determine the botanical origin (floral or honeydew) of honeys, the free amino acid content of 46 honey samples has been determined. The honeys were collected in a small geographic area of approximately 2000 km(2) in central… (More)
Phenacetin (1), acetaminophen (2), acetanilide (3), 4-aminophenol (4), and aniline (5) were tested in S.J.L. Swiss mice for their mutagenic and analgesic activities. The S-analogues of 1 and 2, 4-mercaptoacetanilide (6) and 4-ethylthioacetanilide (7), respectively, were synthesized and tested in the same way to define if both activities could be separated… (More)
The potential of Fourier transform mid-infrared spectroscopy (FT-MIR) using an attenuated total reflectance (ATR) cell was evaluated for the authentication of 11 unifloral (acacia, alpine rose, chestnut, dandelion, heather, lime, rape, fir honeydew, metcalfa honeydew, oak honeydew) and polyfloral honey types (n = 411 samples) previously classified with… (More)
In this note, we indicate how the basic machinery of Walsh transforms can be generalized from the binary case ([3, 4]) to multary alphabets. Our main results show how Walsh coefficients are related to partition coefficients and how they may be used to calculate schema averages.
In this note, we introduce and briefly study a non-binary analogue of the " classical " Walsh transform. It is shown that this transform allows to rewrite the definition of normalized epistasis in terms of generalized Walsh coefficients, in a way which is both practical and elegant. Some examples are included, aiming to give a first indication of the… (More)
Fast protein liquid chromatography on a Superdex 75 HR column has been applied to analyze the proteins of 29 honeys, 12 of floral origin and 17 from honeydew. The molecular masses were comprised between 13100 and 94000 Da. Seven peaks have been separated; four of them were present in all of the honeys, and three were only present in some honeys. Direct… (More)