Naslov
IMPACT OF ALGINATE CONCENTRATION ON TEXTURE AND THE RELEASE OF HEMP (CANNABIS SATIVA L.) BIOACTIVES FROM ALGINATE MICROBEADS – AN OPTIMIZATION STUDY

Autori
Stažić, Ema ; Valinger, Davor ; Jurina, Tamara ; Gajdoš Kljusurić, Jasenka ; Jurinjak Tušek, Ana ; Bosiljkov, Tomislav ; Benković, Maja

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
4th ISEKI-Food E-conference "Food Texture, Quality, Safety and Biosecurity in the Global Bioeconomy" Book of Abstracts / Hadaruga, Nicoleta ; Rivis, Adrian ; Tudoreanu, Liliana ; Habershuber, Anita - Temišvar : Editura AGROPRINT, 2021, 116-117

ISBN
978-606-785-162-5

Skup
4th ISEKI-Food E-conference "Food Texture, Quality, Safety and Biosecurity in the Global Bioeconomy"

Mjesto i datum
Temišvar, Rumunjska; online, 10.11.2021. - 12.11.2021

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
alginate ; hemp ; optimization ; bioactives

Sažetak
Beside its application in the textile and pharmaceutical industry, industrial hemp (Cannabis sativa L.) is attracting more and more interest in the food industry as a part of the functional food portfolio. Namely, it has been discovered that the plant contains numerous bioactives that can act as therapeutic agents and have antibacterial activity. Hemp’s bioactives usually have an astringent taste that is often unappealing to the consumers and has to be masked by the addition of other, stronger aromas to the product. The other way of masking undesirable taste in food products is microencapsulation. In this study, alginate, as one of the most widely used, inexpensive and environmentally friendly encapsulating material was used. The aim of this study was to define the optimal conditions for microencapsulation of hemp bioactives. Experiments were performed according to the Box-Behnken design which included 3 factors on three levels: (i) alginate concentration (2, 3 and 4 %), (ii) extract concentration (50, 75 and 100 %) and (iii) concentration of the receiving CaCl2 solution (1.75, 2 and 2.5 %). Seventeen samples of microcapsules were produced and their physical properties were analyzed: particle size, firmness, compressibility and dry matter content. Chemical properties were analyzed as well: antioxidant activity, total polyphenols content (TPC), microencapsulation efficiency and the bioactives released from the microcapsules. Statistical analysis showed that concentration of alginate solution had significant effect on particle size, dry matter content, TPC, antioxidant activity, release of active substances and microencapsulation efficiency. Extract concentration had a significant effect on the particle size and the TPC, antioxidant activity and release of active substances. The results also showed that the beads with higher hardness and compressibility also had lower amounts of bioactives released from the encapsulation matrix. The determined optimal conditions for physical properties were: 4 % alginate solution, extract concentration of 75 %, and 2.25 % CaCl2 solution ; and for chemical properties: 3 % alginate solution, 75 % extract and 2 % CaCl2 solution.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija, Prehrambena tehnologija

POVEZANOST RADA