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1.
Factors controlling the fate of pyrethroids residues during post-harvest processing of raw agricultural crops: An overview.
Albaseer, SS
Food chemistry. 2019;:58-63
Abstract
Control of residual levels of synthetic pyrethroids in fresh fruits and vegetables as well as in foodstuff made of fresh agricultural produces is of utmost importance. Apart from the need to more control on application of pesticides by farmers, simple and effective postharvest practices by consumers and/or manufacturers usually applied to produces before consumption may enhance food safety from potentially harmful pesticide residues. The present review discusses the underline factors that control the effectiveness of crops postharvest treatments and the possible mechanisms of loss of pesticides during food processing. It is shown that the effectiveness of postharvest processes is controlled by various factors and that understanding such factors is essential for more control of residual pesticides. Though postharvest processes may lead to substantial reduction of residual pesticides, metabolites of broken pesticides are of great concern.
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2.
Current and future prospects for the use of pulsed electric field in the meat industry.
Bhat, ZF, Morton, JD, Mason, SL, Bekhit, AEA
Critical reviews in food science and nutrition. 2019;(10):1660-1674
Abstract
Pulsed electric field (PEF) is a novel non-thermal technology that has recently attracted the attention of meat scientists and technologists due to its ability to modify membrane structure and enhance mass transfer. Several studies have confirmed the potential of pulsed electric field for improving meat tenderness in both pre-rigor and post-rigor muscles during aging. However, there is a high degree of variability between studies and the underlying mechanisms are not clearly understood. While some studies have suggested physical disruption as the main cause of PEF induced tenderness, enzymatic nature of the tenderization seems to be the most plausible mechanism. Several studies have suggested the potential of PEF to mediate the tenderization process due to its membrane altering properties causing early release of calcium ions and early activation of the calpain proteases. However, experimental research is yet to confirm this postulation. Recent studies have also reported increased post-mortem proteolysis in PEF treated muscles during aging. PEF has also been reported to accelerate curing, enhance drying and reduce the numbers of both pathogens and spoilage organisms in meat, although that demands intense processing conditions. While tenderization, meat safety and accelerated curing appears to be the areas where PEF could provide attractive options in meat processing, further research is required before the application of PEF becomes a commercial reality in the meat industry. It needs to deal with carcasses which vary biochemically and in composition (muscle, fat, and bones). This review critically evaluates the published reports on the topic with the aim of reaching a clear understanding of the possible applications of PEF in the meat sector in addition to providing some insight on critical issues that need to be addressed for the technology to be a practical option for the meat industry.
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3.
Innovative processing techniques for altering the physicochemical properties of wholegrain brown rice (Oryza sativa L.) - opportunities for enhancing food quality and health attributes.
Xia, Q, Green, BD, Zhu, Z, Li, Y, Gharibzahedi, SMT, Roohinejad, S, Barba, FJ
Critical reviews in food science and nutrition. 2019;(20):3349-3370
Abstract
Rice is a globally important staple consumed by billions of people, and recently there has been considerable interest in promoting the consumption of wholegrain brown rice (WBR) due to its obvious advantages over polished rice in metabolically protective activities. This work highlights the effects of innovative processing technologies on the quality and functional properties of WBR in comparison with traditional approaches; and it is aimed at establishing a quantitative and/or qualitative link between physicochemical changes and high-efficient processing methods. Compared with thermal treatments, applications of innovative nonthermal techniques, such as high hydrostatic pressure (HHP), pulsed electric fields (PEF), ultrasound and cold plasma, are not limited to modifying physicochemical properties of WBR grains, since improvements in nutritional and functional components as well as a reduction in anti-nutritional factors can also be achieved through inducing related biochemical transformation. Much information about processing methods and parameters which influence WBR quality changes has been obtained, but simultaneously achieving the product stabilization and functionality of processed WBR grains requires a comprehensive evaluation of all the quality changes induced by different processing procedures as well as quantitative insights into the relationship between the changes and processing variables.
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4.
[Nutrition, gastronomy and health in the community of Castilla y León].
Mauriz García, E, González Fernández, MJ, García Fernández, MC
Nutricion hospitalaria. 2019;(Spec No1):56-64
Abstract
Introduction: gastronomy and eating habits are key factors that determine a population's health and nutritional status. The geographical and climatic peculiarities of Castilla y León (CyL) contribute to the development of its cultural and gastronomic wealth. Objectives: to evaluate the gastronomic characteristics of CyL and assess the population's health and nutritional needs. Methods: this study is a narrative review. Results: in CyL there are more than 50 foods with various figures of quality, from vegetables, meats, cheeses and fruits to pasties and sweets. CyL has also the highest ratio of dining options from Spain. The caloric profile analysis reveals the trend towards an unbalanced diet with excess intake of lipids and proteins to the detriment of the consumption of complex carbohydrates. The assessment of food consumption shows higher values than the average national in all the food groups, with special attention to the meat and derivatives, milk and derived, eggs, cereals and legumes. With regard to lifestyle, best values in indicators of sedentarism, physical activity and obesity are observed in comparison with the rest of Spain. Conclusions: the region of Castilla y León has its own geographical and cultural characteristics that make it a region of reference at the national level in relation to the production and marketing of local products of quality. Eating habits are associated with gastronomy and contribute to the promotion of a good nutritional status and standard of living of the population.
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5.
Processing methods for reducing alpha-galactosides in pulses.
Thirunathan, P, Manickavasagan, A
Critical reviews in food science and nutrition. 2019;(20):3334-3348
Abstract
Pulses are an excellent source of protein and dietary fiber and are consumed around the world. Their consumption has been recommended as part of a healthy diet. However, they contain various antinutrients such as tannins and trypsin inhibitors, as well as indigestible carbohydrates called alpha-galactosides. These oligosaccharides are fermented by the microorganisms in the gut, producing gas and causing flatulence in healthy individuals. While this flatulence is undesirable (and results in their low acceptance in the Western diet), alpha-galactosides have also been hypothesized to increase susceptibility to bowel diseases, and their presence in the gut worsens the symptoms of patients with irritable bowel syndrome. The elimination of alpha-galactosides by breeding is difficult as they play a vital role in maintaining seed viability through periods of drought and cold. There is a critical need to evaluate the various post-harvest processing methods, and their effect on alpha-galactoside removal to facilitate commercialization. This paper reviews the effectiveness of methods and processing conditions in alpha-galactoside removal from a variety of pulses.
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6.
A review of microencapsulation methods for food antioxidants: Principles, advantages, drawbacks and applications.
Ozkan, G, Franco, P, De Marco, I, Xiao, J, Capanoglu, E
Food chemistry. 2019;:494-506
Abstract
Bioactivities and numerous health benefits against a number of oxidative stress related diseases have been attributed to the role of dietary antioxidants. The development of physical (spray drying, lyophilization, supercritical fluid precipitation and solvent evaporation), physico-chemical (coacervation, liposomes and ionic gelation) and chemical encapsulation techniques (interfacial polymerization and molecular inclusion complexation) enable to obtain healthier and acceptable bioactive compounds. This review focuses on the impacts of microencapsulation techniques on the encapsulation characteristics of food antioxidants. Additionally, this study also provides detailed information on the principles, effective parameters, advantages, disadvantages and applications of microencapsulation techniques.
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7.
[Nutrition and gastronomy in the region of Valencia].
Bernabeu-Mestre, J, Quiles Izquierdo, J, Galiana Sánchez, ME, Trescastro López, EM, Tormo Santamaría, M
Nutricion hospitalaria. 2019;(Spec No1):86-91
Abstract
Objectives: to analyze the historical development of the Valencian dietary model, establish the relationship between gastronomy and nutrition and explore the role that reclaiming and adapting culinary and gastronomic traditions could play in the promotion of healthy eating. Methods: literature search and content analysis of studies on the subjects under study. Results: traditional Valencian cuisine is characterized by its variety and diversity at local and regional level; however, the extensive use of vegetables in its dishes and recipes renders it unique and was a crucial aspect of the Valencian population's successful food and nutrition transition in the 1960s. Westernization of the Valencian diet and loss of the heritage of the Mediterranean diet in the late 20th century led to a deterioration in the population's nutritional status and the emergence of problems such as overweight and obesity. Faced with this scenario, the modern cuisine spearheaded by the food sector in the Region of Valencia offers an opportunity to reverse this situation, reclaim the region's gastronomic heritage through dialogue between tradition and innovation and help restore healthier eating habits. Conclusions: the culinary grammar of traditional Valencian gastronomy can improve the population's nutrition by providing a healthy, attractive and tasty diet, besides offering a sustainable alternative for production and consumption through its commitment to regional produce.
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8.
Overview of craft brewing specificities and potentially associated microbiota.
Rodhouse, L, Carbonero, F
Critical reviews in food science and nutrition. 2019;(3):462-473
Abstract
The brewing process differs slightly in craft breweries as compared to industrial breweries, as there are fewer control points. This affects the microbiota of the final product. Beer contains several antimicrobial properties that protect it from pathogens, such as low pH, low oxygen and high carbon dioxide content, and the addition of hops. However, these hurdles have limited power controlling spoilage organisms. Contamination by these organisms can originate in the raw materials, persist in the environment, and be introduced by using flavoring ingredients later in the process. Spoilage is a prominent issue in brewing, and can cause quality degradation resulting in consumer rejection and product waste. For example, lactic acid bacteria are predominately associated with producing a ropy texture and haze, along with producing diacetyl which gives the beer butter flavor notes. Other microorganisms may not affect flavor or aroma, but can retard fermentation by consuming nutrients needed by fermentation yeast. Quality control in craft breweries today relies on culturing methods to detect specific spoilage organisms. Using media can be beneficial for detecting the most common beer spoilers, such as Lactobacillus and Pediococci. However, these methods are time consuming with long incubation periods. Molecular methods such as community profiling or high throughput sequencing are better used for identifying entire populations of beer. These methods allow for detection, differentiation, and identification of taxa.
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9.
Activities and conformation changes of food enzymes induced by cold plasma: A review.
Han, Y, Cheng, JH, Sun, DW
Critical reviews in food science and nutrition. 2019;(5):794-811
Abstract
Food endogenous enzymes have impacts on color, texture and flavor of foods during food processing or preservation. Cold plasma is a novel non-thermal food processing technology, which has been extensively studied for contamination elimination and shelf life extension of foods. Particularly, much work has been reported about the effects of cold plasma on enzyme activities and alterations about enzymes conformational structures. It is thus necessary to understand the mechanisms of actions and applications of cold plasma technology in the conformation of food endogenous enzymes. This review focuses on the applications of cold plasma for the inactivation of various endogenous enzymes, including peroxidase, polyphenol oxidase, lysozyme, α-chymotrypsin, alkaline phosphatase, and pectin methylesterase. The activations of several enzymes, such as superoxide dismutase, catalase, and lipase, by cold plasma are also discussed. In addition, this review highlights the transformation of conformational structures including primary and spatial structures induced by chemical reactive species during cold plasma treatments, such as reactive oxygen species and reactive nitrogen species, especially, active sites consisting of prosthetic group and specific amino acids are demonstrated. Both extrinsic and intrinsic factors affecting cold plasma treatments are also described. In general, cold plasma exhibits the ability to activate or inactivate enzymes activities with affecting the conformational structures of enzyme. Further studies should be focused on exploration at molecular level for providing more insight on the interaction mechanism. In addition, equipment and process parameters of cold plasma operation for different fresh food products should be optimized for achieving appropriate control on enzyme variation and obtaining maximum efficiency.
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10.
Exploring the impacts of postharvest processing on the aroma formation of coffee beans - A review.
de Melo Pereira, GV, de Carvalho Neto, DP, Magalhães Júnior, AI, Vásquez, ZS, Medeiros, ABP, Vandenberghe, LPS, Soccol, CR
Food chemistry. 2019;:441-452
Abstract
The aim of this review is to describe the volatile aroma compounds of green coffee beans and evaluate sources of variation in the formation and development of coffee aroma through postharvest processing. The findings of this survey showed that the volatile constituents of green coffee beans (e.g., alcohols, aldehydes, and alkanes) have no significant influence on the final coffee aroma composition, as only a few such compounds remain in the beans after roasting. On the other hand, microbial-derived, odor-active compounds produced during removal of the fruit mucilage layer, including esters, higher alcohols, aldehydes, and ketones, can be detected in the final coffee product. Many postharvest processing including drying and storage processes could influence the levels of coffee aroma compositions, which remain to be elucidated. Better understanding of the effect of these processes on coffee aroma composition would assist coffee producers in the optimal selection of postharvest parameters that favor the consistent production of flavorful coffee beans.