Questi sono gli abstract dei primi articoli scientifici che ho trovato sull' argomento, il grassetto è mio. Come si vede non è tutto bianco o nero.
I. Escriche, M. Visquert, M. Juan-Borrás, P. Fito (2009)
Influence of simulated industrial thermal treatments on the volatile fractions of different varieties of honey, Food Chemistry 112 (2) 329-338
The aim of this study was to determine if the volatile fraction of honey is affected by the application of standard industrial thermal treatment processes. Four types of Spanish honey were studied: three of floral origin (citrus, rosemary and polyfloral) and the fourth from honeydew. Each sample of honey was divided into three parts: one was left untreated, one was liquefied (at 45 °C for 48 h) and the other was both liquefied and pasteurized (at 80 °C for 4 min). All the samples analyzed were characterized to determine their melissopalynological, physicochemical (pH, moisture, total acidity, conductivity, hydroxymethylfurfural, and diastase activity), and volatile profiles. Type of honey had a greater
impact on volatile fraction variations than did heat treatment. The overall volatile profile of each kind of honey permitted the classification of the honeys by botanical origin, revealing that there were practically no differences between the raw, liquefied, and pasteurized samples of each honey.
These findings suggest that industrial processes conducted under controlled conditions should not significantly alter the intrinsic aroma of honey.
X. H. WANG, N. GHELDOF, N. J. ENGESETH (2006)
Effect of Processing and Storage on Antioxidant Capacity of Honey, Journal of Food Science 69 (2) 96-101
The impact of heat and filtration on the antioxidant capacity of clover and buckwheat honey during storage was analyzed.
Processing clover honey did not significantly impact antioxidant capacity (determined by oxygen radical absorbance capacity [ORAC] assay);
processing lowered the antioxidant capacity of buckwheat honey (33.4%). The antioxidant capacity of honeys was reduced after 6 mo of storage with no impact of storage temperature or container type detected at the end point of the storage period. Processed and raw clover honey antioxidant capacity decreased about 30%. Processed buckwheat honey decreased 24% in antioxidant capacity, whereas raw buckwheat honey decreased 49%.
Antioxidant capacity of processed and raw honeys was similar after storage. Phenolic profiles, peroxide accumulation, 5-(hydroxymethyl)-2-furaldehyde (HMF), gluconic acid, and total phenolics were also analyzed. The impact of storage on antioxidant components of processed and raw honey was complex.
Josep Serra Bonvehí, Montserrat Soliva Torrentó, Joan Muntané Raich (2000)
Invertase activity in fresh and processed honeys, Science of food and agriculture 80 (4) 507-512
The enzymatic activities of 147 samples of commercially produced Spanish polyfloral and monofloral honeys are reported.
Important variations in invertase activity and peroxide accumulation were determined to obtain objective information related to honey quality. Variations from 4.04 (Robinia pseudoacacia) to 25.61 g sucrose hydrolysed per 100 g h−1 (SN) (Castanea sativa) and from 11.31 (Erica vagans) to 45.25 µg H2O2 g−1 h−1 (Hedysarum coronarium) were detected, with a range from 10.57 to 46.2 SN in polyfloral honeys. Honeys from Erica spp had different invertase activitieshigh for E cinerea (18.3 SN) and low for E vagans (8.36 SN). The different heating processes of honey have been evaluated to determine the best treatment for preserving invertase activity. The hydroxymethylfurfural content is not a sufficiently good indicator of the degree of deterioration of honey. Another objective was to assess the use of invertase activity in honey quality legislation.