Emerging Food Processing Technologies: Current Status and Future Trends

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Chemical and Molecular Sciences".

Deadline for manuscript submissions: closed (31 January 2020) | Viewed by 11671

Special Issue Editors


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Guest Editor
Department of Food and Drug, University of Parma, Parco Area delle Scienze, 47/A, 43124 Parma, Italy
Interests: food processing; non-conventional stabilization technologies; food cooking and cooling; mathematical modelling of food process; hygienic design
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Guest Editor
Department of Food and Drug, Università di Parma, Parma, Italy
Interests: food technology; ingredients; physical properties; sensory evaluation; food structure
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Food and Drug, University of Parma, Parco Area delle Scienze, 47/A, 43124 Parma, Italy
Interests: food processing; gluten-free; water mobility; food texture

Special Issue Information

Dear Colleagues,

In recent years, the food industry has become a very dynamic and competitive area due principally to free commerce worldwide and to the increasing awareness of consumers. In the past, the food industry's approach was to provide safe foods with long shelf-lives; however, nowadays, it is not sufficient to simply produce safe foods, as markets demand products with a significant nutritional contribution, bioactive compounds, and good sensory properties. More than two decades ago, novel food-processing technologies, based on high-tech or cutting-edge advances, started to emerge to address productivity issues, extending a product’s shelf-life without affecting the nutritional content, organoleptic attributes, and product specifications. Generally, these technologies can be divided into thermal and non-thermal methods depending on their basic principle of action. The reported advantages of novel processing technologies over conventional ones are the retention of sensory attributes and improved functional properties by guaranteeing the same safety level. Although some of the novel technologies date back to the early 20th century, their actual applications are still in a phase that needs a substantial amount of research to prove their pragmatic feasibility. Limitations, including high investment costs, incomplete control of variables associated with the process, and a lack of regulatory approval, have delayed the wider implementation of these technologies on an industrial scale. The readiness and commercialization level of novel and emerging technologies varies both geographically and among more than 20 available techniques. The aim of this Special Issue is to review the potential feasibility of emerging technologies for food stabilization, widen our comprehension of their effects on food quality, and underline the areas that need further investigation. 

Scope

We encourage authors to submit original and previously unpublished research papers and reviews regarding emerging technologies’ applications to food processing.

Potential topics include, but are not limited to:

  • Effects of emerging technologies on the quality and stability of animal and vegetable food products, including enzymatic activities, physical properties and microstructure, sensorial properties, microbial load, the content of bioactive compounds, and antioxidant activities;
  • Novel technologies that have recently been developed and applied to food products;
  • Market reports of foods processed by means of non-conventional technologies;
  • Principles of, and experiments using, the various technologies, such as high-pressure processing, pulsed electric fields, ultraviolet light, microwave heating, radiation, infrared heating, ohmic heating, ozone, pressure, and carbon dioxide, power ultrasound, cold plasma, and electrolyzed water;
  • Mathematical models for the design of emerging technologies’ processes;
  • Comparison, with respect to environmental and sustainability issues, of emerging technologies and conventional ones.  

Prof. Dr. Massimiliano Rinaldi
Dr. Maria Paciulli
Dr. Paola Littardi
Guest Editors

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Keywords

  • Emerging food-processing technologies
  • Non-thermal process
  • Food safety

Published Papers (3 papers)

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Research

17 pages, 2479 KiB  
Article
Influence of Cryoconcentration on Quality Attributes of Apple Juice (Malus Domestica cv. Red Fuji)
by Patricio Orellana-Palma, Virgilio Lazo-Mercado, María Pía Gianelli, Eduard Hernández, Rommy N. Zúñiga and Guillermo Petzold
Appl. Sci. 2020, 10(3), 959; https://doi.org/10.3390/app10030959 - 02 Feb 2020
Cited by 16 | Viewed by 3608
Abstract
Apple juice was subjected to centrifugal block cryoconcentration (CBCC) for three cycles and their effect on the physicochemical properties, bioactive compounds, antioxidant activity, volatile profile, and sensory analysis was investigated. In the final cycle, the solutes were approximately four-fold of the initial condition [...] Read more.
Apple juice was subjected to centrifugal block cryoconcentration (CBCC) for three cycles and their effect on the physicochemical properties, bioactive compounds, antioxidant activity, volatile profile, and sensory analysis was investigated. In the final cycle, the solutes were approximately four-fold of the initial condition (≈14 °Brix) and the color (ΔE* ≈ 25.0) was darker than the fresh juice, with bioactive compound concentration values close to 819 mg GAE/100 g d.m., 248 and 345 mg CEQ/100 g d.m. for total polyphenol, flavonoid, and flavanol content, respectively, equivalent to a retention of over 60%. DPPH and FRAP assays presented high antioxidant activities, with values of approximately 1803 μmol TE/100 g d.m. and 2936 μmol TE/100 g d.m, respectively. The cryoconcentrate showed a similar aromatic profile to the fresh juice, with 29 and 28 volatile compounds identified, respectively. The centrifugal force allowed to obtain excellent process parameters, with 73%, 0.87 (kg/kg), and 85% for efficiency, solute yield, and percentage of concentrate, respectively. Sensory evaluation shows that the odor, aroma, and flavor of fresh sample were remained in the reconstituted cryoconcentrate sample, with good qualifications (four points in a five-score hedonic scale) by trained panelists. Therefore, CBCC can preserve important quality attributes from apple juice. Full article
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16 pages, 1499 KiB  
Article
Effect of Extraction Method and Thermosonication on Apple Juice Quality
by Rafał Nadulski, Zbigniew Kobus, Kamil Wilczyński, Paweł Sobczak, Marian Panasiewicz, Wioletta Żukiewicz-Sobczak and Agnieszka Szparaga
Appl. Sci. 2019, 9(19), 3977; https://doi.org/10.3390/app9193977 - 23 Sep 2019
Cited by 8 | Viewed by 3214
Abstract
This paper presents the results of a study on the influence of juice extraction and thermosonication methods on the content of microorganisms in juices stored under refrigeration and in ambient temperature. It was determined that the type of extraction device used influenced the [...] Read more.
This paper presents the results of a study on the influence of juice extraction and thermosonication methods on the content of microorganisms in juices stored under refrigeration and in ambient temperature. It was determined that the type of extraction device used influenced the content of microorganisms in juice. The lowest total content of mesophilic microorganisms was obtained in juice extracted on a piston press, and the highest was obtained using a centrifuge. The additional purpose was to evaluate the influence of ultrasonic treatment on selected parameters of apple juice quality: cloud value, antioxidant activity, total phenolic content, flavonoid content, and anthocyanin content. The ultrasound treatment of juice from the piston press was conducted at two levels of radiated sonic power so as to obtain sublethal and lethal temperatures of the juice. It was demonstrated that only ultrasound treatment within the range of lethal temperatures was sufficient to deactivate microorganisms. It was determined that thermosonication did not influence the deterioration of chemical properties of juices, with the exception of decreased anthocyanin content. The described method enables prolongation of the shelf life of fresh apple juice under refrigeration to 168 hours (7 days). Full article
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13 pages, 2475 KiB  
Article
Freeze–Thaw Pre-Treatment of Cassava Tubers to Improve Efficiency of Mechanical Peeling
by Ziba Barati, Sajid Latif, Sebastian Romuli and Joachim Müller
Appl. Sci. 2019, 9(14), 2856; https://doi.org/10.3390/app9142856 - 17 Jul 2019
Cited by 5 | Viewed by 4164
Abstract
The effect of a freeze–thaw pre-treatment (FTP) on the peeling process of cassava tubers was investigated in this study. The length and weight of the cassava tubers varied from 200 to 280 mm and 500 to 900 g, respectively. A prototype abrasive cassava [...] Read more.
The effect of a freeze–thaw pre-treatment (FTP) on the peeling process of cassava tubers was investigated in this study. The length and weight of the cassava tubers varied from 200 to 280 mm and 500 to 900 g, respectively. A prototype abrasive cassava peeling machine was used. The operational parameters were the rotational speed of the brushes (550–1150 rpm), peeling time (1–5 min), thawing temperature (50–90 °C), and incubation time of the thawing treatment (0–120 s). Response surface methodology was applied to optimize FTP to improve the peeling process of cassava tubers. Peeled surface area and peel loss were measured as the responses. Results revealed that the peeled surface area and peel loss were significantly influenced by the rotational speed of the brushes, peeling time, and the incubation time of the thawing treatment (p < 0.05). Under optimal peeling conditions, with a rotational speed of 1000 rpm, a peeling time of 3.4 min, a thawing temperature of 59 °C, and an incubation time of 90 s, the peeled surface and the peel loss were approximately 99.5 and 19%, respectively. The results show that the use of FTP can improve cassava peeling by softening the peels and increasing the peeled surface area. Full article
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