Ovisnost fizikalno-kemijskih svojstava praha ekstrakta cvijeta trnine o uvjetima sušenja raspršivanjem

master's thesis

• Title (english): Effect of spray drying conditions on physicochemical properties of blackthorn flower extract powder
• Author: Ena Cegledi
• Mentor: Verica Dragović Uzelac (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: 2017-09-25, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Food Technology

Abstract

Trnina (Prunus spinosa L.) je divlja biljka čiji gotovo svi dijelovi pokazuju ljekovita svojstva te su bogat izvor antioksidativnih fenolnih spojeva. Cvijet trnine je još uvijek nedovoljno istražen, a ima velik potencijal za proizvodnju biljnih ekstrakata, prahova i sl.. Stoga je cilj ovog rada bio je ispitati kako odabrani uvjeti sušenja raspršivanjem (temperatura od 120-200 °C, omjer nosača i suhe tvari ekstrakta od 0,70-2,00 i udio nosača arapske gume u iznosu od 0,20-0,80) utječu na... More fizikalno-kemijska svojstva (iskorištenje, topljivost, sadržaj vlage, nasipnu gustoću, veličinu čestica) praha ekstrakta cvijeta trnine te odrediti optimalne uvjete za proizvodnju praha najboljih svojstava. Općenito, povećanjem temperature i udjela nosača u procesu sušenja raspršivanjem, iskorištenje se povećava, sadržaj vlage smanjuje, topljivost, nasipna gustoća i veličina čestica rastu. Omjer nosača i suhe tvari ekstrakta u iznosu 2,44, bez dodatka arapske gume i pri temperaturi sušenja 164,13 °C su optimalni uvjeti za proizvodnju praha najboljih osobina, kod kojih iskorištenje procesa iznosi 62,67 %, sadržaj vlage u prahu je 2,35 %, a topljivost praha je 76,84 %. Less

Abstract (english)

Blackthorn (Prunus spinosa L.) is a wild plant in which almost all parts have healing properties and are a rich source of antioxidant phenolic compounds. The flower is still insufficiently explored and has great potential for the production of herbal extracts, powders etc.. Therefore, the aim of this study was to examine how the selected conditions of spray drying (temperature of 120 to 200 ° C, ratio of carrier agent and dry extract substance ranging from 0.70 to 2.00 and the... More proportion of gum Arabic in the amount from 0.20 to 0.80) influence the physicochemical properties (yield, solubility, moisture content, bulk density, particle size) of the blackthorn aqueous extract powder and also to determine optimal conditions for the production of the best quality powders. Generally, by increasing the temperature and the proportion of the carrier agent in the spray drying process, the yield increases, the moisture content decreases, while solubility, bulk density and particle size increase. The ratio of carrier agent and dry extract substance in the amount of 2.44, without the proportion of gum Arabic and at the drying temperature of 164.13 ° C are the optimal conditions for the production of the best powders, where the yield of the process is 62.67%, the moisture content of the powder is 2, 35% and the solubility of the powder is 76.84%. Less

• Keywords: trnina; sušenje raspršivanjem; fizikalno-kemijska svojstva; biljni ekstrakt
• Keywords (english): blackthorn; spray drying; physicochemical properties; herbal extract
• Language: croatian
• URN:NBN: urn:nbn:hr:159:871837
• Study programme: Title: Food Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka prehrambenog inženjerstva (magistar/magistra inženjer/inženjerka prehrambenog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-11-13 14:26:59