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Analysis of honey main sugars by size-exclusion chromatography

The main constituents of honey are sugars, mainly the monosaccharides fructose and glucose (reducing sugars), which account for 80% of the total mass, while the disaccharides (especially sucrose and maltose) represent 10%. In general, fructose predominates (giving a sweeter taste to honey than sucrose), although, in some honeys, glucose (that assigns a less sweet taste than sucrose but more than maltose) may be...

Sugar analysis by a multi-sensor system: applying to honey samples

One of the emerging approaches for analysis of liquid samples with complex matrices is the Electronic Tongue (ET) since it allows evaluating tastes by calibration, mimicking the human tongue. The ET records a pattern of signals that depends on the matrix solution composition, which information is extracted into qualitative and quantitative information by multivariate statistical methods. The chemical sensors us...

Analysis of acids and sugars in fruit-based drinks by SEC-UV-RI

Beverage industry produces a large and diverse range of soft drinks, beverages containing flavourings and/or fruit juices (sodas and fruit juices), of which t he quality and safety must be monitored to protect and satisfy customers. From the raw ingredients to the final product, quality control is needed to ensure product safety, quality, labelling, regulatory compliance and consistency. The development of anal...

Mead production improvements after using a factorial desing

ln the north of Portugal, and in particular in Trás-os-Montes region, there is sometimes an overproduction of honey. Mead is one of the possibilities to overcome this problem. However, most of the time, mead is not produced in a standardized, but empirical and handmade form.

Mead production improvements after using a factorial desing

Anexo

Análise sensorial de vários tipos de hidromel

Mead production: comparison of different production scales (preliminary results)

Mead production represents a possible economic alternative to honey producers that intend to obtain honey products with surplus value. From that the present work aims to study the influence of using different production scales on the quality of the final mead obtained and on the process performance. Increasing the production scale almost ten times (1.5 to 20 L), some differences were observed. Maximum specific ...

Strawberry-tree, blackthorn and rose fruits: detailed characterization in nutri...

The chemical composition and biological properties of three wild fruits (strawberry-tree berries, sloes and dog rose hips) were evaluated, in order to valorise these products as sources of nutrients and nutraceuticals. The analysed fruits contain very useful bioactive phytochemicals such as phenolics, vitamins (ascorbic acid and tocopherols) and carotenoids. All the samples proved to have antioxidant activity (...

Application of an electronic tongue to detect gliadins in gluten-free foods

Celiac disease is an autoimmune-mediated disorder triggered in genetically susceptible individuals by the ingestion of some gluten proteins, namely gliadins. To prevent inadvertent gluten consumption, the Commission Regulation (EC) N°41/2009 will implement labeling foods as ‘gluten-free” or “low-gluten content.

Mead production: comparison of different production scales (preliminary results)

Mead production represents a possible economic alternative to honey producers that intend to obtain honey products with surplus value. From that the present work aims to study the influence of using different production scales on the quality of the final mead obtained and on the process performance. Increasing the production scale almost ten times (1.5 to 20 L), some differences were observed. Maximum specific ...