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New edible coatings composed of galactomannans and collagen blends to improve t...

The objective of this work was to produce new edible coatings, based on a mixture of galactomannans from novel sources (seeds of Adenanthera pavonina and Caesalpinia pulcherrima), collagen and glycerol, and to determine their influence in gas transfer rates when they are applied on mangoes and apples. The first part of the work consisted in obtaining coating solutions with the convenient values of wettability f...

Extraction, purification and characterization of galactomannans from non-tradit...

This work presents a methodology for the extraction of galactomannans from seeds of four different species of Leguminosae (Adenanthera pavonina, Caesalpinia pulcherrima, Gleditsia triacanthos and Sophora japonica) to be used e.g. in the food and biomedical industries. The galactomannans were obtained by aqueous extraction followed by a precipitation with ethanol. This methodology is simpler and easier to perfor...

Functional polysaccharides as edible coatings for cheese

The objective of the present study was to apply the polysaccharides from different nontraditional sources for cheese coatings. Chitosan, galactomannan from Gleditsia triacanthos, and agar from Glacilaria birdiae were tested, with different formulations and with the addition of plasticizer and corn oil. The surface properties of the cheese and the wetting capacity of the coatings on the cheese were determined. T...

Suitability of novel galactomannans as edible coatings for tropical fruits

The main objective of this work was to determine the optimal composition of edible coatings in view of their application to extend the shelf life of several tropical fruits. Coatings constituted by galactomannans from different sources (Caesalpinia pulcherrima and Adenanthera pavonina) and glycerol were characterized as coatings for five tropical fruits: acerola (Malpighia emarginata), cajá (Spondias lutea), ma...

Expression of frutalin, an α-d-galactose-binding jacalin-related lectin, in the...

Frutalin is an α-d-galactose-binding lectin expressed in breadfruit seeds. Its isolation from plant is time-consuming and results in a heterogeneous mixture of different lectin isoforms. In order to improve and facilitate the availability of the breadfruit lectin, we cloned an optimised codifying frutalin mature sequence into the pPICZαA expression vector. This expression vector, designed for protein expression...

Edible coatings from galactomannans and their application to tropical fruits

Edible coatings play an important role in the quality and in the resistance to transportation, storage and display of a wide range of fresh and processed foods. Polysaccharide coatings with an oil-free appearance and low caloric content can be used to increase the shelf life of fresh fruits, since they allow the modification of the internal gas composition of fruits, retarding their senescence. The objective of...

Cloning and expression of frutalin, an alpha-dgalactose-binding plant lectin, i...

Expression of frutalin in Pichia pastoris and evaluation of its potential as a ...

Novel functional polysaccharides as edible coatings for cheese

One of the problems occurring during cheese ripening and later on, throughout the distribution chain, is the occurrence of molds and the loss of water. Usually, this problem is solved by the use of synthetic coatings where an antimicrobial agent is introduced. Polysaccharide coatings have an oilfree appearance, a low caloric content and can be used to increase the shelf life of foods. The objective of this work...

Plant seed galactomannans as edible coatings