biotechnology-enzymology-2019-posters-abstracts

4 / 26

Page 54
Notes:
conferenceseries.com
Volume 9 Journal of Biotechnology & Biomaterials
ISSN: 2155-952X
JOINT EVENT
February 28-March 02, 2019 | Berlin, Germany
5th International Conference on
Enzymology and Protein Chemistry
&
22nd Global Congress on Biotechnology
Biotechnology 2019
Enzymology 2019
February 28-March 02, 2019
&
How to convert industrial dairy effluent into high quality proteins with microalgae
Marion Champeaud
Université de Poitiers, France
Utilization of whey or whey permeate is one of major concerns of the dairy industry nowadays, especially the acid whey,
which mostly remains untreated prior to disposal. In 2010, 734 million tons of milk, and 160-180 million tons of whey per
year were produced worldwide. In 2014, milk production was higher than 800 million tons and is constantly increasing over the
years. Despite the different strategies considered by the industrials to valorize whey: lactose crystallization, food applications
in bakery products, dry mixes, snack, and milk replacer, alcoholic fermentation, or biogas conversion, only 50% of this whey is
processed. In this study we present an industrial fermentation model to valorize these dairy by-products to obtain added-value
bio-products at the same time. We demonstrate that the microalgae Galdieria sulphuraria is able to consume 100% lactose,
98% of lactate and 79% of the citrate present in whey permeate. Specific transport experiments show that lactose uptake by
Galdieria sulphuraria involves the induction of a specific low affinity transport system (Km=53±2.9). The biomass production
is whey permeate specific and range from 30 to more than 110 g/l of dry matter. In addition to direct the bio-remediation of
industrial dairy waste, the algae biomass produced show a real nutritional interest due to its high protein content (>50%) and
is naturally rich in essential amino acid.
Biography
Marion Champeaud graduated with a Bachelor of Biology five years ago and a Master’s degree in Agro-Industry three years ago from Bordeaux University in France
and she is currently doing her PhD in partnership between a biotechnology company Fermentalg and Poitiers University in France (UMR CNRS 7267). Her research
studies in engineering process and microalgae culture area resulted in 2 patents-pending and 2 publications in progress.
Marion Champeaud, J Biotechnol Biomater 2019, Volume 9
DOI: 10.4172/2155-952X-C2-116