Faculty of Technology and Metallurgy
Permanent URI for this communityhttps://repository.ukim.mk/handle/20.500.12188/20
Browse
13 results
Search Results
- Some of the metrics are blocked by yourconsent settings
Item type:Publication, Development of Poly(L-lactic acid) Films Containing Curcuma lunga L. Extract for Active Cheese Packaging(MDPI AG, 2025) ;Bužarovska, Aleksandra; Trajkovska Petkoska, Anka<jats:p>Biobased packaging solutions with active functions for different food categories are a very attractive topic nowadays. This packaging provides suitable preservation of the food quality and extends the shelf life of packed items. In addition, this is a promising pathway to overcome global pollution, to protect human health, as well as to provide a better planetary wellbeing. In this work, a packaging composition based on poly(lactic acid) (PLA) with the addition of Curcuma longa L. (C) extract prepared by the solution casting method is promoted as a potential packaging option for the active food packaging of cheese. The dopant levels of the extract were performed at 0.5%, 1%, 2%, 5%, and 10%, while the neat PLA film was used as a control. The obtained results are promising. By a thermal analysis, it is shown that C-extract has a plasticizing and nucleating effect on PLA molecules, as well as improving the barrier and other film properties. Moreover, this packaging was proven as a potential antimicrobial packaging for white cheese—it enables extending the shelf life by direct contact. This is a simple way of manufacturing biobased packaging doped with natural antimicrobials that could be used for other food categories that are prone to microbiological attack.</jats:p> - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Valorization of tomato processing by-products: Predictive modeling and optimization for ultrasound-assisted lycopene extraction(Elsevier BV, 2024-11); ; ; ;Stojchevski, MartinLycopene is a carotenoid highly valuable to the food, pharmaceutical, dye, and cosmetic industries, present in ripe tomatoes and other fruits with a distinctive red color. The main source of lycopene is tomato crops. This bioactive component can be successfully isolated from tomato processing waste, commonly called tomato pomace, mostly made from tomato skins, seeds, and some residual tomato tissue. The main investigative focus in this work was the application of green engineering principles in each stage of the optimized ultrasound-assisted extraction (UAE) of enzymatically treated tomato skins to obtain functional extracts rich in lycopene. The experimental plan was designed to determine the influence of studied operating parameters: enzymatic reaction time (60, 120, and 180 min), extraction time (0, 5, 10, 15, 30, 60, and 120 min), and temperature (25, 35 and 45 ℃) on lycopene yield. Process optimization was performed based on the yield of lycopene [1018, 1067, and 1120 mg/kg] achieved at optimal operating conditions. An artificial neural network (ANN) model was developed and trained for predictive modeling of the closed extraction system, with operating parameters used as input neurons and experimentally obtained values for lycopene content defined as the output neural layer. Applied ANN architecture provided a high correlation of experimental output with ANN-generated data (R=0.99914) with a model deviation error for the entire data set of RMSE=5.3 mg/kg. The k-Nearest Neighbor algorithm was introduced to predict lycopene yield using experimental key features: operating temperature, extraction time, and time of enzymatic treatment, split into training and testing sets with an 85/15 ratio. The model interpretation was conducted through the SHAP (SHapley Additive exPlanations) methodology. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Inulinase immobilisation in PAA/PEG composite for efficient fructooligosaccharides production(Informa UK Limited, 2022-12-26) ;Temkov, Mishela; ;Velickova, ElenaKrastanov, Albert - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Prediction of the temperature sensitivity of strawberry drop damage using dynamic finite element method(Elsevier BV, 2022-08) ;An, Xue ;Liu, Huijie ;Fadiji, Tobi ;Li, Zhiguo - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Estimating rapidly and precisely the concentration of beta carotene in mango homogenates by measuring the amplitude of optothermal signals, chromaticity indices and the intensities of Raman peaks(Elsevier BV, 2010-08) ;Bicanic, Dane; ;Luterotti, Svjetlana ;Twisk, CharlotteBuijnsters, Josephus Gerardus - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Pre-fermentative Treatment of Grape Juice and Must from Vranec Variety with a Glucose Oxidase from Aspergillus niger(Springer International Publishing, 2020-09-05) ;Petkova, Verica; ; ;Stafilov, Trajce - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Anthocyanin composition of Vranec, Cabernet Sauvignon, Merlot and Pinot Noir grapes as indicator of their varietal differentiation(Springer Science and Business Media LLC, 2011-01-22) ;Dimitrovska, Maja; ; Murkovic, Michael - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Lactobacillus plantarum extracellular metabolites: In vitro assessment of probiotic effects on normal and cancerogenic human cells(Elsevier BV, 2014-12); ;Cencič, Avrelija ;Winkelhausen, EleonoraLangerholc, Tomaž - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Correlation of trans-Lycopene Measurements by the HPLC Method with the Optothermal and Photoacoustic Signals and the Color Readings of Fresh Tomato Homogenates(Springer Science and Business Media LLC, 2010-03) ;Bicanic, Dane; ;Luterotti, Svjetlana ;Marković, Ksenijavan Twisk, CharlotteThe trans-lycopene content of fresh tomato homogenates was assessed by means of the laser photoacoustic spectroscopy, the laser optothermal window, micro-Raman spectroscopy, and colorimetry; none of these methods require the extraction from the product matrix prior to the analysis. The wet chemistry method (high-performance liquid chromatography) was used as the absolute quantitative method. Analytical figures of merit for all methods were compared statistically; best linear correlation was achieved for the chromaticity index a* and chroma C*. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Inulinase immobilisation in PAA/PEG composite for efficient fructooligosaccharides production(Informa UK Limited, 2020-12-26) ;Temkov, Mishela; ;Velickova, ElenaKrastanov, Albert
