DSpace Repository

Valorization of raspberry seeds using acidic NADES: A preliminary study

Show simple item record

dc.contributor.author Teslić, Nemanja
dc.contributor.author Oliveira, Filipe
dc.contributor.author Santos, Filipa
dc.contributor.author Stupar, Alena
dc.contributor.author Pojić, Milica
dc.contributor.author Mandić, Anamarija
dc.contributor.author Pavlić, Branimir
dc.contributor.author Cvetanović, Aleksandra
dc.contributor.author Duarte, Ana Rita C.
dc.contributor.author Mišan, Aleksandra
dc.date.accessioned 2023-07-27T06:41:56Z
dc.date.available 2023-07-27T06:41:56Z
dc.date.issued 2022-09
dc.identifier.citation Teslić, N., Oliveira, F., Santos, F., Stupar, A., Pojić, M., Mandić, A., Pavlić, B., Cvetanović A., Duarte, A.R.C., Mišan, A. (2022) Valorization of raspberry seeds using acidic NADES: A preliminary study. 4th Edition of Euro-Global Conference on Food Science and Technology, 12-13. September, Book of Abstracts 51. en_US
dc.identifier.uri http://oa.fins.uns.ac.rs/handle/123456789/354
dc.description.abstract By-products of raspberry seeds fruit processing industry are rich in bioactive compounds. Ellagic acid (EA) is a polyphenol naturally present in raspberry seeds which has antioxidant, hepatoprotective, antimicrobial, anti-carcinogenic, antiinflammatory activity, among other interesting bioactivities. EA majority is bonded in the form of ellagitannins (ETs) which have lower bioactivity when comparing to EA. Hence, ETs have to be hydrolysed to EA. Classical acid hydrolysis of ETs requires utilization of mineral acids (e.g. HCl) and alcohol (e.g. MeOH) which are detrimental for human health and hazardous for the environment. Natural Deep Eutectic Systems (NADES) composed of e.g. citric acid and betaine could serve as alternative medium for the hydrolysis process. This would allow to production edible, non-toxic and ready-to-use extracts which could be further used in food and cosmetic industry. Hydrolysis of ETs to EA using NADES is determined by numerous parameters (e.g. temperature, time, molar ratio of citric acid and betaine in NADES, water content in NADES, NADES/plant ratio etc.) and process optimization with all variables could be time consuming, inefficient and expensive. Thus, it is necessary to reduce their number and determine the most influential variables prior to final optimization step. For that purpose, 25-1 factorial experimental design was applied with a total of 16 experimental setups. The obtained extracts were analysed in terms of EA content which was determined by HPLC method, total polyphenol content analysed with Folin-Ciocalteu procedure and in vitro antioxidant activity determined by DPPH assay. Among all selected variables, NADES/plant ratio, temperature, and time, exhibited the highest impact on EA content, thus, these parameters should be selected for the final optimization step. en_US
dc.description.sponsorship Authors would like to thank the Ministry of education, science and technological development of the Republic of Serbia, Grant No. 451-03-9/2021-14/ 200222; the Science Fund of the Republic of Serbia, PROMIS, Grant No. 6060592, DEStiny; and the European Union, Horizon 2020 (European Research Council), Grant no ERC-2016-CoG 72503 for the funding. en_US
dc.language.iso en en_US
dc.publisher Magnus group en_US
dc.relation info:eu-repo/grantAgreement/ScienceFundRS/Promis/6060592/RS//
dc.rights openAccess
dc.title Valorization of raspberry seeds using acidic NADES: A preliminary study en_US
dc.type info:eu-repo/semantics/other en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Browse

My Account