Primjena prirodnih komponenata kao zamjena škodljivim sintetičkim komponentama u kozmetičkim proizvodima

undergraduate thesis

• Title (english): Use of natural ingredients to replace harmful synthetic ingredients in cosmetic products
• Author: Bernarda Andrić
• Mentor: Mirela Leskovac (mentor)
• Committee member: Mirela Leskovac (predsjednik povjerenstva)
• Committee member: Emi Govorčin Bajsić (član povjerenstva)
• Committee member: Vladimir Dananić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2024-09-19, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Razvitkom kozmetičke industrije razvija se i čovjekova svijest o samim proizvodima koje koristimo i njihovoj štetnosti za zdravlje i okoliš. Različiti štetni sastojci, mirisi, aditivi i kemijski spojevi koji se koriste u kozmetičkoj industriji utječu na zdravlje čovjeka. Posljednjih godina, razvija se osobiti interes korištenja prirodne kozmetike. Raste svijest o prednostima prirodnih sastojaka u odnosu na sintetičke, koji mogu uzrokovati alergije, probleme s kožom i negativno utjecati na zdravlje. Ovaj rad nudi uvid o primjeni prirodnih komponenti u kozmetici za njegu kože. Cilj ovog rada je ispitati toplinska svojstva prirodnih sastojaka koji se koriste u pripremi dezodoransa, shea maslaca, kokosovog maslaca, kakao maslaca, škroba tapioke, natrijevog hidrogenkarbonata i eteričnih ulja grejpa i palmarose. Toplinska svojstva određena su diferencijalnom pretražnom kalorimetrijom (DSC) i termogravimetrijskom analizom (TGA). Diferencijalna pretražna kalorimetrija (DSC) pokazuje da maslaci imaju složene termičke profile zbog različitih faza kristalizacije i polimorfnih prijelaza. S druge strane, termogravimetrijska analiza (TGA) potvrđuje njihovu visoku toplinsku stabilnost, pri čemu se shea maslac izdvaja kao posebno stabilan. Eterična ulja grejpa i palmarose imaju različite razine toplinske stabilnosti, s tim da ulje grejpa pokazuje veću otpornost na razgradnju. Također, škrob tapioke i natrijev hidrogenkarbonat pokazuju značajnu toplinsku stabilnost.

Abstract (english)

With the development of the cosmetics industry, people are becoming increasingly aware of the products we use and how harmful they are to our health and the environment. Various harmful ingredients, fragrances, additives and chemical compounds used in the cosmetics industry affect human health. In recent years, there has been a particular interest in the use of natural cosmetics. Awareness of the benefits of natural ingredients compared to synthetic ingredients, which can cause allergies and skin problems and affect health, has grown.
This paper provides an insight into the use of natural ingredients in skin care cosmetics.
The aim of this paper is to investigate the thermal properties of natural ingredients used in the production of deodorants: Shea butter, coconut butter, cocoa butter, tapioca starch, sodium bicarbonate and grapefruit and palmarosa essential oils. The thermal properties were determined using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Differential scanning calorimetry (DSC) shows that butters have complex thermal profiles due to different crystallization stages and polymorphic transitions. On the other hand, thermogravimetric analysis (TGA) confirms their high thermal stability, with shea butter proving to be particularly stable. The essential oils of grapefruit and palmarosa exhibit different thermal stability, with grapefruit oil showing a higher resistance to degradation. Tapioca starch and sodium bicarbonate also exhibit high thermal stability.

• Keywords: prirodna kozmetika; zdravlje; okoliš; toplinska svojstva; DSC; TGA
• Keywords (english): natural cosmetics; health; environment; thermal properties; DSC; TGA
• Language: croatian
• URN:NBN: urn:nbn:hr:149:651824
• Study programme: Title: Materials Science and Engineering - Undergraduate study; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-11-16 23:20:41