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Researchers at the University of Burgos are developing a technology for the immobilization of enzymes that reduce bitterness in citrus juices.
New and innovative aspects
Conventional methods, to reduce the bitterness in citrus juices, involve not only the removal of the bitter compounds (naringin and limonin), but also bioactive components (organic acids, flavonoids, limonoids…) from the juice. In this regard, biotechnological methods, either isolated enzymes or whole cells, are an interesting alternative way to remove bitterness, without affecting the nutritional and healthy properties
(antioxidants…) of the processed juice. Furthermore, the technology of enzyme immobilization onto or into solid supports improves catalytic activity and resistance to denaturation, and the possibility of enzyme separation from reaction mixtures and/or the reuse and the ability to operate continuously.
Main advantages of its use
The use of soluble enzymes in citrus juice processing presents several advantages as such reaction specificity, mild operating conditions and without contaminant effects (green technology). Nevertheless, in spite of the unquestionable advantages, there exist a number of practical problems in the use of soluble enzymes in such as their inactivation at the acidic pH conditions or their high cost. Immobilizing the enzyme on solid supports allows the modification of its catalytic properties, higher stability, prevention of contamination of the processed product, the reuse of catalytic activity, and the possibility of processing in continuous.
Specifications
Enzymes can be immobilized on various supports (ionic exchangers, polymers…) either by physical adsorption, covalent binding or entrapment.
Immobilization of enzymes is known to offer several advantages such as ease of separation from a reaction mixture and repeated use in continuous processes, enabling greater control over catalytic processes and process economics. Moreover, the use of an immobilized enzyme permits to greatly simplify the design of the reactor and the control of the reaction.
Applications
This technique is aimed at the Food sector, especially for those juice manufacturers.
Current development status
Device already developed and validated for industrialization.
Desired business relationship
Commercial Agreement, License Agreement, Technical Cooperation: further development; Technical Cooperation: testing new applications; Technical Cooperation: adaptation to specific needs.
The aim of the Technology Transfer Office (TTO) of the Universidad de Burgos is to promote Innovative technology through the research results transfer and the connections between the University and the new needs and requirements of society - we are the link between the University and the Industry.
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