scholarly journals Pulsed-light system as a novel food decontamination technology: a review

2007 ◽  
Vol 53 (7) ◽  
pp. 813-821 ◽  
Author(s):  
N. Elmnasser ◽  
S. Guillou ◽  
F. Leroi ◽  
N. Orange ◽  
A. Bakhrouf ◽  
...  
Keyword(s):  
Broad Spectrum ◽  
Consumer Preferences ◽  
Good Alternative ◽  
Food Preservation ◽  
Microbial Inactivation ◽  
Pulsed Light ◽  
Novel Technology ◽  
Preservation Method ◽  
Low Degree ◽  
Fresh Products

In response to consumer preferences for high quality foods that are as close as possible to fresh products, athermal technologies are being developed to obtain products with high levels of organoleptic and nutritional quality but free of any health risks. Pulsed light is a novel technology that rapidly inactivates pathogenic and food spoilage microorganisms. It appears to constitute a good alternative or a complement to conventional thermal or chemical decontamination processes. This food preservation method involves the use of intense, short-duration pulses of broad-spectrum light. The germicidal effect appears to be due to both photochemical and photothermal effects. Several high intensity flashes of broad spectrum light pulsed per second can inactivate microbes rapidly and effectively. However, the efficacy of pulsed light may be limited by its low degree of penetration, as microorganisms are only inactivated on the surface of foods or in transparent media such as water. Examples of applications to foods are presented, including microbial inactivation and effects on food matrices.

scholarly journals Consumer Acceptance of Gene-Edited versus Genetically Modified Foods in Korea

2021 ◽  
Vol 18 (7) ◽  
pp. 3805
Author(s):  
Eunae Son ◽  
Song Soo Lim
Keyword(s):  
Gene Editing ◽  
Consumer Preferences ◽  
Genetically Modified ◽  
Relevant Information ◽  
Consumer Acceptance ◽  
Genetically Modified Foods ◽  
Breeding Methods ◽  
Novel Foods ◽  
Novel Technology ◽  
Potential Market

Food made with gene-editing has received considerable attention in recent years because it is claimed to be a little different from traditional genetically modified breeding methods concerning safety. However, consumer acceptance of these novel foods and their potential market uptake remains to be answered. This study aims to assess differences in the acceptance of gene-edited and genetically modified foods in Korea. The choice-based conjoint analysis is adopted to estimate part-worth functions for the soybean oil attributes with 200 surveyed samples. The estimated part-worth values reveal how much each attribute affects consumers’ decision-making. Estimated results suggest that consumers tend to accept gene-editing more than genetically modified foods. The acceptance of novel technology is shown to correspond closely to the degree of consumers’ scientific knowledge, highlighting the importance of revealing relevant information regarding the technology. Results also show that country of origin is a significant food-specific attitudinal factor in shaping consumer preferences.

Application of Pulsed Light Technology in Microbial Safety and Food Preservation

2020 ◽  
pp. 227-247
Author(s):  
Venus Bansal ◽  
Narender K. Chandla ◽  
Rekha Chawla ◽  
Veena Nagarajappa ◽  
Santosh K. Mishra
Keyword(s):  
Food Preservation ◽  
Microbial Safety ◽  
Pulsed Light

Effect of Superchilling Storage on Quality Characterizes of Beef as Compared with Chilled and Frozen Preservation

2012 ◽  
Vol 554-556 ◽  
pp. 1195-1201 ◽  
Author(s):  
Qian Liu ◽  
Rui Wang ◽  
Bao Hua Kong ◽  
Yong Gen Zhang
Keyword(s):  
Ph Value ◽  
Frozen Storage ◽  
Thiobarbituric Acid ◽  
Food Preservation ◽  
Raw Material ◽  
Plate Count ◽  
Thiobarbituric Acid Reactive Substances ◽  
Total Plate Count ◽  
Basic Nitrogen ◽  
Fresh Products

Food preservation is very important for the quality and safety of the meat and its product. In present study, the fresh beef were storaged in three different conditions, which including superchilling (-1 °C), chilled (4 °C) and frozen (-18 °C) preservation, respectively. The pH value, total plate count, thiobarbituric acid-reactive substances value (TBARS), total volatile basic nitrogen (TVB-N) and color were also determined. The result showed that after 8 days storage, the chilled beef decayed seriously, the frozen beef had no conspicuous changes, and the beef under supperchilling condition could extend the shelflife to 20 days and also maintained higher quality. To some extent, superchilling storage represent an advantage over traditional chilled and frozen storage, it is a good way to preserve freshness of fresh products and the raw material before processing, and also could have great effect on improving the quality characterizes of beef and prolong its shelf life.

scholarly journals Pulsed Light treatment below a Critical Fluence (3.82 J/cm2) minimizes photo-degradation and browning of a model Phenolic (Gallic Acid) Solution

Foods ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 380 ◽  
Author(s):  
Wiktor ◽  
Mandal ◽  
Pratap Singh
Keyword(s):  
Acid Solution ◽  
Gallic Acid ◽  
Prediction Models ◽  
Pulse Frequency ◽  
Food Preservation ◽  
Nutrient Loss ◽  
Pulsed Light ◽  
Cumulative Energy ◽  
The Impact

Pulsed light (PL) is one of the most promising non-thermal technologies used in food preservation and processing. Its application results in reduction of microbial load as well as influences the quality of food. The data about the impact of PL on bioactive compounds is ambiguous, therefore the aim of this study was to analyze the effect of PL treatment of a gallic acid aqueous solution—as a model system of phenolic abundant liquid food matrices. The effect of PL treatment was evaluated based on colour, phenolic content concentration and antioxidant activity measured by DPPH assay using a design of experiments approach. The PL fluence (which is the cumulative energy input) was varied by varying the pulse frequency and time. Using Response Surface Methodology, prediction models were developed for the effect of fluence on gallic acid properties. It was demonstrated that PL can modify the optical properties of gallic acid and cause reactions and degradation of gallic acid. However, application of PL did not significantly alter the overall quality of the model gallic acid solution at low fluence levels. Cluster analysis revealed that below 3.82 J/cm2, changes in gallic acid were minimal, and this fluence level could be used as the critical level for food process design aiming to minimize nutrient loss.

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