H2020Индивидуална стипендия2021–2024

MACSSFT · Development of a Simultaneous Saccharification and Fermentation Technology for Valorisation of Ulva spp. from Macroalgal Blooms

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2021-09-01 → 2024-08-31
Финансиране от ЕС: 337 401 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Зелените водорасли от вид Ulva се разграждат с ензими, за да се превърнат в биопластмаса (PHB). Това помага за намаляване на екологичните щети от водораслите и превръща вредната биомаса в полезни продукти.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Development of a Simultaneous Saccharification and Fermentation Technology for Valorisation of Ulva spp. from Macroalgal Blooms

Uncontrolled macroalgal blooms have been on the rise owing to the eutrophication of the marine environment caused by anthropomorphic industrial and agricultural activities. The green opportunistic macroalgae Ulva thrives in such conditions accounting for over half of global blooms. Economic and environmental problems associated with these tides include economic losses in aquaculture, death of marine organisms, inhibition of growth of indigenous flora, the release of hydrogen sulphide from the decaying biomass that is toxic to the native flora and fauna, and high cost of removal and disposal of the accumulated biomass. While environmental and economic problems are associated with these blooms, the biomass generated could be utilised beneficially. The biomass predominantly consists of sugars which account for up to 65% of the dry weight. One of the major sugars- Ulvan is a unique heterogeneous sulfated polysaccharide made up of glucuronic acid, iduronic acid, xylose and rhamnose. These monomers can be used to produce a plethora of products such as aromatics, acetone, butanol, ethanol, and 1,2 propanediol and bioplastics. Owing to the complexity of ulvan, availability of enzymes that can completely breakdown this polysaccharide is a major bottleneck towards its utilisation. Complete chemical breakdown is not possible due to the stability of the bonds that hold the monomers together and is often associated with formation of by-products that hamper further processing. Therefore, the overall objective of the project was to develop a suitable process to utilise the polymeric sugars- ulvan and cellulose from the biomass by breaking them down to simple sugars using enzymes and fermenting them to polyhydroxybutyrate (PHB’s), a polymer that is of interest as bio-derived and biodegradable plastic.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Uncontrolled macroalgal blooms, also known as green or golden tides, is an increasingly frequent global phenomenon and is partly attributed to the increased eutrophication of the marine environment caused by anthropomorphic industrial and agricultural activities. The green opportunistic macroalgae genus Ulva thrives in such conditions and accounts for more than half of global blooms. Various environmental and economic problems have been associated with the occurrence of such blooms; however, if utilised appropriately, the biomass generated from these tides has the potential to be economically rewarding. Ulva spp. have an interesting chemical composition that is predominated by carbohydrates (≤65% dry weight), followed by proteins and lipids. Ulvan, a sulphated polysaccharide consisting of rhamnose, glucuronic acid, iduronic acid and xylose, is the predominant molecule, followed by cellulose. Contemporary research has focused on exploiting the cellulose fraction only, with ulvan, consisting of unique monosaccharides, being overlooked due to the unavailability of suitable saccharification enzymes. Although work on the saccharification of ulvan is gaining momentum, the complete enzymatic breakdown is still a bottleneck. Similarly, the unique monosaccharide composition of ulvan has not been explored to its full potential for fermentation to value-added products. This project, therefore, aims to develop a suitable technology to saccharify both ulvan and cellulose from the biomass and ferment all the monosaccharides present in the hydrolysate to value-added products. Novel and commercial enzymes would be identified and trialled in individual processes for saccharification and fermentation first; with a simultaneous process subsequently optimised to minimise resource inputs and generate minimum waste streams. The developed process would finally be evaluated at a pilot scale to demonstrate its potential to be implemented at the industrial level.

Оригинален текст от CORDIS (на английски).

Участници

ABERYSTWYTH UNIVERSITY · AberystwythКоординаторОбединеното кралство