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Trusinska M, Rybak K, Drudi F, Tylewicz U, Nowacka M. Combined effect of ultrasound and vacuum impregnation for the modification of apple tissue enriched with aloe vera juice. ULTRASONICS SONOCHEMISTRY 2024; 104:106812. [PMID: 38394825 PMCID: PMC10906508 DOI: 10.1016/j.ultsonch.2024.106812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 01/26/2024] [Accepted: 02/14/2024] [Indexed: 02/25/2024]
Abstract
The aim of the work was to investigate how ultrasonic (US) treatment impacts on the physical and chemical properties of vacuum-impregnated apples. Apple slices were subjected to vacuum impregnation (VI) in an Aloe vera juice solution without additional treatments, serving as the reference material. Alternatively, ultrasound (US) treatments, at frequencies of 25 or 45 kHz, and durations of 10, 20, or 30 min, were employed as a pre-treatments before the VI process. The use of US processing enabled a significant increase in the efficiency of VI, without influencing in a significant way the color of the VI samples. The VI process led to a reduction in the content of bioactive compounds, in particular vitamin C and TPC decreased by 34 and 32 %, respectively. The use of US as a pre-treatment, in particular at 45 kHz for 20 or 30 min, led to a better preservation of these compounds (unchanged values for vitamin C and decrease by 23-26 % for TPC in comparison to the fresh samples). Through cluster analysis encompassing all assessed properties, it was evident that US treatment was beneficial for the processing, however the application of appropriate parameters of US treatment (frequency and time) had an impact on achieving similar quality to VI samples. The ultrasound treatment before vacuum impregnation may be suitable, however, the specific processing parameters should be defined for the obtained high quality of the final product.
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Affiliation(s)
- Magdalena Trusinska
- Department of Food Engineering and Process Management, Institute of Food Sciences, Warsaw University of Life Sciences- SGGW, Nowoursynowska 159c, Warsaw 02-776, Poland
| | - Katarzyna Rybak
- Department of Food Engineering and Process Management, Institute of Food Sciences, Warsaw University of Life Sciences- SGGW, Nowoursynowska 159c, Warsaw 02-776, Poland
| | - Federico Drudi
- Department of Agricultural and Food Sciences, University of Bologna, Piazza Goidanich 60, Cesena 47521, Italy
| | - Urszula Tylewicz
- Department of Agricultural and Food Sciences, University of Bologna, Piazza Goidanich 60, Cesena 47521, Italy; Interdepartmental Centre for Agri-Food Industrial Research, University of Bologna, Via Quinto Bucci 336, Cesena 47521, Italy
| | - Malgorzata Nowacka
- Department of Food Engineering and Process Management, Institute of Food Sciences, Warsaw University of Life Sciences- SGGW, Nowoursynowska 159c, Warsaw 02-776, Poland.
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Glicerina V, Siroli L, Betoret E, Canali G, Dalla Rosa M, Lanciotti R, Romani S. Characterization and evaluation of the influence of an alginate, cocoa and a bilayer alginate-cocoa coating on the quality of fresh-cut oranges during storage. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:4454-4461. [PMID: 35092615 DOI: 10.1002/jsfa.11799] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 01/25/2022] [Accepted: 01/29/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Fresh-cut products are ready-to-use goods which retain the fresh characteristics of raw produce. However, numerous factors restrict the quality and shelf-life of fresh-cut products. One of the most promising, convenient and safe technologies to preserve the quality and to prolong the shelf-life of fresh fruits and vegetables is the application of edible coatings. RESULTS The aim of this study was to investigate the effects of different coatings (alginate-based, cocoa-based and a combination of them) on physicochemical, microbiological and sensory characteristics of fresh-cut oranges during storage. Preliminary rheological analyses were performed on coatings in order to characterize them. The three different coated orange samples were packaged in polyethylene terephthalate trays under atmospheric conditions and stored for 9 days at 6 °C. During storage, all samples were analysed for water activity, moisture, colour, texture, microbiological analyses and sensory quality. Orange samples coated with sodium alginate maintained the highest quality characteristics in terms of texture and microbiological properties, but not from a sensory point of view. Samples coated only with cocoa presented very high sensory attributes, but the lowest microbiological and textural quality. Samples covered in both alginate and cocoa demonstrated the best quality parameters throughout the whole storage period, including high sensory characteristics and the lowest microbiological cell loads (yeast and mesophilic aerobic bacteria under the threshold limit of 6.0 log cfu g-1 ). CONCLUSION The bilayer coating represented the best solution in order to develop new ready to-eat-fresh oranges with both high textural and sensory attributes and prolonged shelf-life. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Virginia Glicerina
- Interdepartmental Centre for Agri-Food Industrial Research, Alma Mater Studiorum, University of Bologna, Cesena, Forli-Cesena, Italy
| | - Lorenzo Siroli
- Department of Agricultural and Food Sciences, Alma Mater Studiorum, University of Bologna, Cesena, Forli-Cesena, Italy
| | - Ester Betoret
- Instituto de Agroquimica y Tecnologia de Alimentos (IATA) Calle catedratico Agustìn Escardino, Paterna, Spain
| | - Giada Canali
- Interdepartmental Centre for Agri-Food Industrial Research, Alma Mater Studiorum, University of Bologna, Cesena, Forli-Cesena, Italy
| | - Marco Dalla Rosa
- Interdepartmental Centre for Agri-Food Industrial Research, Alma Mater Studiorum, University of Bologna, Cesena, Forli-Cesena, Italy
- Department of Agricultural and Food Sciences, Alma Mater Studiorum, University of Bologna, Cesena, Forli-Cesena, Italy
| | - Rosalba Lanciotti
- Interdepartmental Centre for Agri-Food Industrial Research, Alma Mater Studiorum, University of Bologna, Cesena, Forli-Cesena, Italy
- Department of Agricultural and Food Sciences, Alma Mater Studiorum, University of Bologna, Cesena, Forli-Cesena, Italy
| | - Santina Romani
- Interdepartmental Centre for Agri-Food Industrial Research, Alma Mater Studiorum, University of Bologna, Cesena, Forli-Cesena, Italy
- Department of Agricultural and Food Sciences, Alma Mater Studiorum, University of Bologna, Cesena, Forli-Cesena, Italy
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Influence of Two Different Coating Application Methods on the Maintenance of the Nutritional Quality of Fresh-Cut Melon during Storage. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11188510] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This study aimed at evaluating the effects of two coating application methods, spraying and dipping, on the quality of fresh-cut melons. An alginate-based coating containing both ascorbic and citric acid was applied at two concentrations (5% and 10%) with both methods on fresh-cut melon. The nutritional quality of the products was investigated during 11 days of storage at 10 °C. The suitability and adaptability of the applied coatings on the fruit were evaluated based on rheological and microstructural properties. Moisture, carotenoids, total polyphenols and ascorbic acid content were analyzed on melon samples during storage. Results showed that the coating solution applied by the dipping method and at the highest concentration (10%), allowed to better maintain some quality characteristics of fresh-cut melon, thanks also to the better coating homogeneity and higher thickness observed through microstructural analysis.
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