Utjecaj sušenja raspršivanjem na svojstva praha eteričnog ulja komorača

undergraduate thesis

• Title (english): The effect of spray drying on the properties of fennel essential oil powder
• Author: Marta Balun
• Mentor: Maja Repajić (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Food Engineering); (Laboratory for Technology of Fruits and Vegetables Preservation and Processing); Zagreb
• Defense date and country: 2022-07-08, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Nutrition

Abstract

Komorač je ljekovita, aromatična biljka čije eterično ulje (ETU) pokazuje antimikrobna i antioksidativna svojstva. Kako bi se zaštitila i zadržala funkcionalna svojstva, ETU se može inkapsulirati metodom sušenja raspršivanjem. Stoga, cilj ovog rada bio je ispitati utjecaj uvjeta sušenja raspršivanjem na svojstva praha ETU komorača te odrediti optimalne uvjete provedbe procesa. U tu svrhu varirani su omjer kombinacije nosača maltodekstrina i arapske gume (1:1, 1:3 i 3:1) te temperatura sušenja (120, 160 i 200 °C). Ispitana su svojstva dobivenih prahova (udio suhe tvari, veličina čestica, topljivost i higroskopnost) te iskorištenje, zadržavanje ETU i učinkovitost procesa. Rezultati su pokazali kako je prah s omjerom maltodekstrina i arapske gume 1:3 pokazao najmanju veličinu čestica te najveću topljivost, higroskopnost i najveće zadržavanje ETU. Najveća učinkovitost procesa postignuta je pri omjerima 1:3 i 3:1. Prahovi osušeni pri 200 °C pokazuju najviši udio suhe tvari, najveću higroskopnost i iskorištenje procesa te najmanju veličinu čestica. Najveće zadržavanje ETU i najveća učinkovitost postižu se pri 160 °C. Kao optimalni uvjeti određeni su omjer maltodekstrina i arapske gume 1:3 te temperatura sušenja 160 °C.

Abstract (english)

Fennel is a medicinal, aromatic plant whose esential oil (EO) shows antimicrobial and antioxidant properties. In order to protect and mantain functional properties, EO can be encapsulated by spray drying. Therefore, the aim of this study was to examine the influence of spray drying conditions on the characteristics of fennel EO powder and to determine the optimal conditions for the process implementation. Therefore, ratio of carriers combination of maltodextrin and gum arabic (1:1,1:3 and 3:1) and drying temperature (120, 160 and 200 °C) were varied. The properties of obtained powders (dry matter content, particle size, solubility and hygroscopicity) as well as yield, EO retention and process efficiency were determined. Results showed that the powder with a ratio of maltodextrin and gum arabic 1:3 showed the smallest particle size and the highest solubility, hygroscopicity and oil retention. The highest process efficiency was achieved at 1:3 and 3:1 ratios. Powders dried at 200 °C showed the highest dry matter content, the highest hygroscopicity and process efficiency, while they had the smallest particle size. Highest oil retention and efficiency were achieved at 160 °C. Ratio of maltodextrin and arabic gum 1:3 and drying temperature of 160 °C were determined as optimal conditions.

• Keywords: komorač; eterično ulje; sušenje raspršivanjem; inkapsulacija
• Keywords (english): Fennel; essential oil; spray drying; encapsulation
• Language: croatian
• URN:NBN: urn:nbn:hr:159:481693
• Study programme: Title: Nutrition; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) nutricionizma (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) nutricionizma)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-09-27 09:48:45