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https://www.readbyqxmd.com/read/28088406/short-communication-effects-of-vacuum-freeze-drying-on-inactivation-of-cronobacter-sakazakii-atcc29544-in-liquid-media-with-different-initial-inoculum-levels
#1
Rui Jiao, Jina Gao, Xiyan Zhang, Maofeng Zhang, Jiren Chen, Qingping Wu, Jumei Zhang, Yingwang Ye
Vacuum freeze-drying is an important food-processing technology for valid retention of nutrients and bioactive compounds. Cronobacter sakazakii has been reported to be associated with severe infections in neonates through consumption of contaminated powdered infant formula. In this study, effects of vacuum freeze-drying treatment for 12, 24, and 36 h on inactivation of C. sakazakii with different initial inoculum levels in sterile water, tryptic soy broth (TSB), skim milk, and whole milk were determined. Results indicated that the lethality rate of C...
January 11, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28080325/adequacy-of-parent-packed-lunches-and-preschooler-s-consumption-compared-to-dietary-reference-intake-recommendations
#2
Maria Jose Romo-Palafox, Nalini Ranjit, Sara J Sweitzer, Cindy Roberts-Gray, Courtney E Byrd-Williams, Margaret E Briley, Deanna M Hoelscher
BACKGROUND: U.S. preschool children consume inadequate amounts of key nutrients. Understanding the contents of lunches packed by parents and consumed by their children can help identify areas of opportunity for the development of healthy food preferences. OBJECTIVE: To evaluate the nutrient adequacy of lunches packed by parents and consumed by children attending early care and education (ECE) centers. METHODS: Baseline data from 607 parent-child dyads in the "Lunch Is in the Bag" cluster-randomized controlled trial in Central Texas were examined...
January 12, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28073080/impact-of-environmental-factors-on-the-culturability-and-viability-of-listeria-monocytogenes-under-conditions-encountered-in-food-processing-plants
#3
Anaïs Overney, Joséphine Jacques-André-Coquin, Patricia Ng, Brigitte Carpentier, Laurent Guillier, Olivier Firmesse
The ability of Listeria monocytogenes to adhere to and persist on surfaces for months or even years may be responsible for its transmission from contaminated surfaces to food products. Hence the necessity to find effective means to prevent the establishment of L. monocytogenes in food processing environments. The aim of this study was to assess, through a fractional experimental design, the environmental factors that could affect the survival of L. monocytogenes cells on surfaces to thereby prevent the persistence of this pathogen in conditions mimicking those encountered in food processing plants: culture with smoked salmon juice or meat exudate, use of two materials with different hygiene status, biofilm of L...
December 21, 2016: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28071003/new-model-for-colour-kinetics-of-plum-under-infrared-vacuum-condition-and-microwave-drying
#4
Reza Amiri Chayjan, Behnam Alaei
BACKGROUND: Quality of dried foods is affected by the drying method and physiochemical changes in tissue. The drying method affects properties such as colour. The colour of processed food is one of the most important quality indices and plays a determinant role in consumer acceptability of food materials and the processing method. The colour of food materials can be used as an indirect factor to determine changes in quality, since it is simpler and faster than chemical methods. METHODS: The study focused on the kinetics of colour changes of plum slices, under infrared vacuum and microwave conditions...
April 2016: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/28055818/time-domain-nuclear-magnetic-resonance-td-nmr-and-chemometrics-for-determination-of-fat-content-in-commercial-products-of-milk-powder
#5
Paloma Andrade Martins Nascimento, Paulo Lopes Barsanelli, Ana Paula Rebellato, Juliana Azevedo Lima Pallone, Luiz Alberto Colnago, Fabíola Manhas Verbi Pereira
This study shows the use of time-domain (TD)-NMR transverse relaxation (<italic>T</italic><sub>2</sub>) data and chemometrics in the nondestructive determination of fat content for powdered food samples such as commercial dried milk products. Most proposed NMR spectroscopy methods for measuring fat content correlate free induction decay or echo intensities with the sample&#x2019;s mass. The need for the sample&#x2019;s mass limits the analytical frequency of NMR determination, because weighing the samples is an additional step in this procedure...
January 5, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28050621/-a-two-faced-vitamin-folic-acid-prevention-or-promotion-of-colon-cancer
#6
Anke Weißenborn, Anke Ehlers, Karen-I Hirsch-Ernst, Alfonso Lampen, Birgit Niemann
In the late 1930s, it was discovered that liver and yeast extracts can be used to correct certain cases of megaloblastic anemia in pregnancy. The factor responsible for this was isolated from spinach leaves in the 1940s, and referred to as folate, a term derived from the Latin word folium for leaf. Folate is considered an essential nutrient for human beings. Folic acid, the synthetic form of the vitamin, is used in dietary supplements, medicines and fortified foods. Since the 1980s, it has been recommended that women who plan to become pregnant and pregnant women during the first trimester of pregnancy take folic acid supplements...
January 3, 2017: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/28045271/determination-of-interfacial-amorphicity-in-functional-powders
#7
Maria Badal Tejedor, Niklas Nordgren, Michael Schuleit, Samaneh Pazesh, Göran Alderborn, Anna Millqvist-Fureby, Mark W Rutland
The nature of the surfaces of particles of pharmaceutical ingredients, food powders, and polymers is a determining factor for their performance in for example tableting, powder handling, or mixing. Changes on the surface structure of the material will impact the flow properties, dissolution rate, and tabletability of the powder blend. For crystalline materials, surface amorphization is a phenomenon which is known to impact performance. Since it is important to measure and control the level of amorphicity, several characterization techniques are available to determine the bulk amorphous content of a processed material...
January 13, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28042845/overall-quality-of-fruits-and-vegetables-products-affected-by-the-drying-processes-with-the-assistance-of-vacuum-microwaves
#8
REVIEW
Adam Figiel, Anna Michalska
The seasonality of fruits and vegetables makes it impossible to consume and use them throughout the year, thus numerous processing efforts have been made to offer an alternative to their fresh consumption and application. To prolong their availability on the market, drying has received special attention as currently this method is considered one of the most common ways for obtaining food and pharmaceutical products from natural sources. This paper demonstrates the weakness of common drying methods applied for fruits and vegetables and the possible ways to improve the quality using different drying techniques or their combination with an emphasis on the microwave energy...
December 30, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28041933/a-risk-assessment-of-dietary-ochratoxin-a-in-the-united-states
#9
Nicole J Mitchell, Chen Chen, Jeffrey D Palumbo, Andreia Bianchini, Jack Cappozzo, Jayne Stratton, Dojin Ryu, Felicia Wu
Ochratoxin A (OTA) is a mycotoxin (fungal toxin) found in multiple foodstuffs. Because OTA has been shown to cause kidney disease in multiple animal models, several governmental bodies around the world have set maximum allowable levels of OTA in different foods and beverages. In this study, we conducted the first exposure and risk assessment study of OTA for the United States' population. A variety of commodities from grocery stores across the US were sampled for OTA over a 2-year period. OTA exposure was calculated from the OTA concentrations in foodstuffs and consumption data for different age ranges...
December 30, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28028417/a-twofold-comparison-between-dual-cure-resin-modified-cement-and-glass-ionomer-cement-for-orthodontic-band-cementation
#10
Hanaa El Attar, Omnia Elhiny, Ghada Salem, Ahmed Abdelrahman, Mazen Attia
AIM: To test the solubility of dual cure resin modified resin cement in a food simulating solution and the shear bond strength compared to conventional Glass ionomer cement. MATERIALS AND METHOD: The materials tested were self-adhesive dual cure resin modified cement and Glass Ionomer (GIC). Twenty Teflon moulds were divided into two groups of tens. The first group was injected and packed with the modified resin cement, the second group was packed with GIC. To test the solubility, each mould was weighed before and after being placed in an analytical reagent for 30 days...
December 15, 2016: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28017550/a-novel-bioconversion-for-value-added-products-from-food-waste-using-musca-domestica
#11
Yi Niu, Dong Zheng, Binghua Yao, Zizhe Cai, Zhimin Zhao, Shengqing Wu, Peiqing Cong, Depo Yang
Food waste, as a major part of the municipal solid waste has been generated increasingly worldwide. Efficient and feasible utilization of this waste material for productivity process is significant for both economical and environmental reasons. In the present study, Musca domestica larva was used as the carrier to conduct a bioconversion with food waste to get the value-added maggot protein, oil and organic fertilizers. Methods of adult flies rearing, culture medium adjuvant selection, maggot culture conditions, stocking density and the valorization of the waste have been explored...
December 22, 2016: Waste Management
https://www.readbyqxmd.com/read/28012791/aromatic-profile-and-sensory-characterisation-of-ultrasound-treated-cranberry-juice-and-nectar
#12
Anet Režek Jambrak, Marina Šimunek, Marinko Petrović, Helena Bedić, Zoran Herceg, Hrvoje Juretić
Ultrasonication is a nonthermal food processing technology that is used in several applications (extraction, pretreatment before drying, freezing, inactivation of microorganisms etc.). The objective of this study was to investigate the effect of high power ultrasound and pasteurisation on the aroma profile and sensory properties of cranberry juice and nectar. Samples were treated according to the experimental design, with high power sonicator at ultrasound frequency of 20kHz under various conditions (treatment time 3, 6 and 9min, sample temperature: 20, 40 and 60°C and amplitude 60, 90 and 120μm)...
November 25, 2016: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28008814/comprehensive-evaluation-of-the-antioxidant-potential-of-coastal-dune-mushroom-species-from-the-southwest-of-france
#13
Lina Smolskaite, Thierry Talou, Petras Rimantas Venskutonis
Numerous mushroom species are used as food and for medicinal purposes; however, many species that may contain bioactive compounds remain underinvestigated. In this study, the antioxidant properties of extracts sequentially isolated with cyclohexane, dichloromethane, and methanol from 25 costal dune mushroom species collected in the southwestern region of France were evaluated based on their radical scavenging capacity, ferric-reducing antioxidant power, oxygen radical absorbance capacity, and Folin-Ciocalteu-determined total phenolic content...
2016: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/28003631/bacterial-and-fungal-counts-of-dried-and-semi-dried-foods-collected-from-dhaka-bangladesh-and-their-reduction-methods
#14
Farahnaaz Feroz, Hiromi Shimizu, Terumi Nishioka, Miho Mori, Yoshikazu Sakagami
 Food is a basic necessity for human survival, but it is still the vehicle for the transmission of food borne disease. Various studies have examined the roles of spices, herbs, nuts, and semi-dried fruits, making the need for safe and convenient methods of decontamination a necessity. The current study determined the bacterial and fungal loads of 26 spices and herbs, 5 nuts, 10 semi-dried fruits and 5 other foods. Spices, herbs and semi-dried foods demonstrated the highest bacterial and fungal loads with the majority showing over 10(4) CFU/mL...
2016: Biocontrol Science
https://www.readbyqxmd.com/read/28003580/identification-of-the-odor-active-volatile-compound-z-z-4-7-tridecadienal-as-a-potential-ligand-for-the-transmembrane-receptor-cd36
#15
Satoshi Tsuzuki, Takahiko Amitsuka, Tatsuya Okahashi, Yuki Kozai, Masayuki Yamasaki, Kazuo Inoue, Tohru Fushiki
Cluster of differentiation 36 (CD36) is a broadly expressed transmembrane protein that has multiple ligands, including oxidized low-density lipoproteins. We found recently that CD36 is expressed in olfactory sensory neurons and postulated that it plays a role in the detection of distinct odorants in the nasal cavity. To date, however, there have been few examples of attempts to identify CD36-recognizable odorants. In this study, by an in vitro assay using a peptide mimic of the receptor, we provided evidence that CD36 recognizes (Z,Z)-4,7-tridecadienal, an odor-active volatile compound that is known to occur in Katsuobushi (dried, fermented, and smoked skipjack tuna commonly used in Japanese cuisine as a seasoning) and in the preorbital secretion of male oribi...
2016: Biomedical Research
https://www.readbyqxmd.com/read/28003205/incorporating-freeze-dried-strawberry-powder-into-a-high-fat-meal-does-not-alter-postprandial-vascular-function-or-blood-markers-of-cardiovascular-disease-risk-a-randomized-controlled-trial
#16
Chesney K Richter, Ann C Skulas-Ray, Trent L Gaugler, Joshua D Lambert, David N Proctor, Penny M Kris-Etherton
BACKGROUND: Postprandial dysmetabolism-an exaggerated spike in triglycerides, glucose, and insulin-increases cardiovascular disease risk by inducing oxidative stress, inflammation, and endothelial dysfunction. Polyphenol-rich foods may blunt these effects when they are incorporated into a high-fat, calorie-dense meal. Strawberries are a rich source of polyphenols, but there is little research on their postprandial effects. OBJECTIVE: This study was designed to investigate the effect of adding 40 g freeze-dried strawberry powder (∼1 lb...
December 21, 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27995134/comparative-analysis-of-nutritional-and-bioactive-properties-of-aerial-parts-of-snake-gourd-trichosanthes-cucumerina-linn
#17
Ruvini Liyanage, Harshani Nadeeshani, Chathuni Jayathilake, Rizliya Visvanathan, Swarna Wimalasiri
The present investigation was carried out to determine the nutritional and functional properties of T. cucumerina. Water extracts of freeze dried flowers, fruits, and leaves of T. cucumerina were evaluated for their total phenolic content (TPC), total flavonoid content (TFC), antioxidant activity, α-amylase inhibitory activity, and fiber and mineral contents. Antioxidant activity, TPC, and TFC were significantly higher (P ≤ 0.05) in leaves than in flowers and fruits. A significant linear correlation was observed between the TPC, TFC, and antioxidant activities of plant extracts...
2016: International journal of food science
https://www.readbyqxmd.com/read/27987960/analysis-of-%C3%AE-glucan-molar-mass-from-barley-malt-and-brewer-s-spent-grain-with-asymmetric-flow-field-flow-fractionation-af4-and-their-association-to-proteins
#18
Claudia Zielke, Cristina Teixeira, Huihuang Ding, Steve Cui, Margareta Nyman, Lars Nilsson
β-Glucan benefits are related with its molar mass and it would be of interest to better understand how this parameter can be changed by processing and variety for design of food with specific health effects. For this purpose, extracts from barley malts and brewers' spent grain, processed at different conditions, were analysed regarding β-glucan content, molar mass, and protein content. Molar mass distribution was assessed using asymmetric flow field-flow fractionation (AF4) with multiangle light scattering (MALS), differential refractive index (dRI) and fluorescence (FL) detection...
February 10, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/27981597/effect-of-pretreatment-on-rehydration-colour-and-nanoindentation-properties-of-potato-cylinders-dried-using-mixed-mode-solar-dryer
#19
Kshanaprava Dhalsamant, Punyadarshini P Tripathy, Shanker L Shrivastava
BACKGROUND: Desirable quality estimation is an important consumer driver for wider acceptability of mixed-mode solar drying of potatoes in food industries. The aim of this study is to characterize rehydration, colour, texture, nanoindentaion and microstructure of dried potato samples and to establish the influence of pre-drying treatment on above qualities. RESULTS: The water absorption capacity and rehydration ability of solar dried potato were significantly influenced by pretreatment followed by rehydration temperature and sample diameter...
December 16, 2016: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/27979207/chemical-composition-and-physicochemical-properties-of-tropical-red-seaweed-gracilaria-changii
#20
Pei Teng Chan, Patricia Matanjun
A study on the proximate composition, minerals, vitamins, carotenoids, amino acids, fatty acids profiles and some physicochemical properties of freeze dried Gracilaria changii was conducted. It was discovered that this seaweed was high in dietary fibre (64.74±0.82%), low in fat (0.30±0.02%) and Na/K ratio (0.12±0.02). The total amino acid content was 91.90±7.70% mainly essential amino acids (55.87±2.15mgg(-1)) which were comparable to FAO/WHO requirements. The fatty acid profiles were dominated by the polyunsaturated fatty acids particularly docosahexaenoic (48...
April 15, 2017: Food Chemistry
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