Dinata, Nancy Diva Elmira Widha (2024) PENDUGAAN UMUR SIMPAN OATMEAL COOKIES RENDAH KALORI DENGAN VARIASI JENIS KEMASAN MENGGUNAKAN METODE AKSELERASI PENDEKATAN KADAR AIR KRITIS. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
Cookies are high-calorie dry foods that can increase obesity. One of the innovations of low-calorie cookies to overcome obesity is oatmeal cookies with the use of 60% oatmeal and 100% low-calorie sugar. The decline in the quality of cookies is caused by water absorption during storage, seen from the decrease in crispiness. This study aims to estimate the shelf life of oatmeal cookies as important information for product safety and quality. The study consists of two stages. The first stage includes the manufacture and initial testing which includes calorie and proximate values (water content, ash, fat, protein, carbohydrates, and fiber). The second stage focuses on estimating shelf life using the ASLT method, with a critical water content approach in Aluminum Foil Composite packaging, metalized plastic, and polypropylene (PP), which includes determining the initial, critical, and equilibrium water content, as well as testing the accuracy of the sorption isotherm model and calculating shelf life using the Labuza equation. The initial test results of oatmeal cookies showed calories of 252.1 kcal/50g, water content of 3.45%, ash of 1.56%, protein of 7.85%, fat of 24.19%, carbohydrate of 62.95%, and crude fiber of 7.26%. The initial water content (Mo) was 0.0357 g H2O/g Solid, and the critical water content (Mc) was 0.0782 g H2O/g Solid, where the crispiness began to decrease. The sorption isotherm curve was sigmoidal with the Hasley equation model (Log(ln(1/aw)) = -2.1686 - 1.9124 log Me), with an equilibrium water content (Me) of 0.1409 g H2O/g Solid. The water vapor permeability of the packaging is 0.001632 g H2O/day/m².mmHg (Aluminum Foil Composite), 0.009114 g H2O/day/m².mmHg (metalized plastic), and 0.032647 g H2O/day/m².mmHg (polypropylene). The shelf life of products in Aluminum Foil Composite packaging is 126.8 days, metalized plastic 22.7 days, and polypropylene 5.7 days
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | Q Science > Q Science (General) | ||||||||
| Divisions: | Faculty of Engineering > Departement of Food Engineering | ||||||||
| Depositing User: | Nancy Diva Elmira | ||||||||
| Date Deposited: | 12 Dec 2024 07:49 | ||||||||
| Last Modified: | 12 Dec 2024 07:49 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/32964 |
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