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Volume 7, Issue 6(Suppl) J Chromatogr Sep Tech
ISSN: 2157-7064 JCGST, an open access journal
Page 31
Notes:
Separation Techniques 2016
September 26-28, 2016
conferenceseries.com
Separation Techniques
September 26-28, 2016 Valencia, Spain
2nd International Conference and Expo on
Separation of heath compounds in Goji (Lycium barbarum) aqueous extracts by membrane
technology
Conidi Carmela1 and Alfredo Cassano2
1University of Calabria, Italy
2ITM-CNR, Italy
In recent years, the recovery of antioxidant compounds from natural sources is a focus of great interest due to their potential
use as natural ingredients in food, pharmaceutical and cosmetic formulations or as substitutes of synthetic products in the
food industry. Several conventional extraction techniques have been reported for the recovery of target compounds from raw
materials, such as solvent extraction, ultrasound-assisted extraction, pressurized-liquid extraction, supercritical fluid extraction
and resin-based extraction. These extraction methods are characterized by some drawbacks, including the degradation of the
target compounds due to high temperatures and long extraction times (as in solvent extractions) and health related risks.
Membrane operations are recognized as powerful tools for the purification and concentration of various solutions (e.g., juices,
extracts and whey) and the separation of valuable compounds from different food matrix. This study was aimed at developing
a sustainable process for the purification of natural antioxidants from Goji berries and leaves. This process is based on the
combination of an aqueous extraction with membrane operations in order to avoid the use of organic solvent or adsorbents.
The aqueous extraction was studied in order to obtain the maximum yield of phenolic compounds. At this purpose, different
parameters such as the extraction time and temperature, the pH and the solid/liquid ratio, were optimized. Aqueous extracts
were processed through membrane operations, such as ultrafiltration (UF) and nanofiltration (NF), in order to evaluate the
overall bioactivity of fractionated extracts in comparison with that of the unprocessed extracts.
Biography
Conidi Carmela has completed her PhD from University of Calabria and the Institute on Membrane Technology, ITM-CNR. She has completed her Post-doctoral
studies from Instituto de Ingenieria de Alimentos para el Desarrollo, Universitat Politècnica de València, Spain. She is a Post-doctoral Researcher at the Institute
of Membrane Technology of CNR, where she is involved in different research activities devoted to the purification and concentration of antioxidant compounds in
products and byproducts of food processing. She has published more than 30 papers in international journals.
Conidi Carmela et al., J Chromatogr Sep Tech 2016, 7:6(Suppl)