keyword
MENU ▼
Read by QxMD icon Read
search

Food challenges

keyword
https://www.readbyqxmd.com/read/28647155/quantifying-trade-offs-between-future-yield-levels-food-availability-and-forest-and-woodland-conservation-in-benin
#1
Confidence Duku, Sander J Zwart, Lenny G J van Bussel, Lars Hein
Meeting the dual objectives of food security and ecosystem protection is a major challenge in sub-Saharan Africa (SSA). To this end agricultural intensification is considered desirable, yet, there remain uncertainties regarding the impact of climate change on opportunities for agricultural intensification and the adequacy of intensification options given the rapid population growth. We quantify trade-offs between levels of yield gap closure, food availability and forest and woodland conservation under different scenarios...
June 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28646719/dna-aptamer-based-colorimetric-detection-platform-for-salmonella-enteritidis
#2
Ceren Bayraç, Füsun Eyidoğan, Hüseyin Avni Öktem
Food safety is a major issue to protect public health and a key challenge is to find detection methods for identification of hazards in food. Food borne infections affects millions of people each year and among pathogens, Salmonella Enteritidis is most widely found bacteria causing food borne diseases. Therefore, simple, rapid, and specific detection methods are needed for food safety. In this study, we demonstrated the selection of DNA aptamers with high affinity and specificity against S. Enteritidis via Cell Systematic Evolution of Ligands by Exponential Enrichment (Cell-SELEX) and development of sandwich type aptamer-based colorimetric platforms for its detection...
June 16, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28644005/from-electrochemistry-to-electroluminescence-development-and-application-in-ratiometric-aptasensor-for-aflatoxin-b1
#3
Long Wu, Fan Ding, Wenmin Yin, Jing Ma, Biru Wang, Axiu Nie, Heyou Han
Aflatoxin B1 (AFB1), one of the most toxic chemical carcinogens, has been widely studied. It remains challenging to develop simple, accurate and sensitive analytical methods for the detection of AFB1 in food matrices. In this work, based on dual-signaling strategy, a ratiometric aptasensor was designed and verified for the accurate and sensitive detection of AFB1. The electrochemical method was first used as a model to verify the specific interaction between AFB1 and the aptamer, in which ferrocene (Fc) and methylene blue (MB) anchored DNA sequences were acted as dual signals...
June 23, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28643572/distinctive-barriers-to-antiretroviral-therapy-adherence-among-non-adherent-adolescents-living-with-hiv-in-botswana
#4
Elizabeth Yang, Seipone Mphele, Neo Moshashane, Boineelo Bula, Jennifer Chapman, Harriet Okatch, Ed Pettitt, Ontibile Tshume, Tafireyi Marukutira, Gabriel Anabwani, Elizabeth Lowenthal
Levels of adherence to HIV treatment are lower among adolescents compared with older and younger individuals receiving similar therapies. We purposely sampled the most and least adherent adolescents from a 300-adolescent longitudinal HIV treatment adherence study in Gaborone, Botswana. Multiple objective and subjective measures of adherence were available and study participants were selected based on sustained patterns of either excellent or poor adherence over a one-year period. Focus group discussions (FGD) and in-depth interviews (IDI) were conducted with the adolescents and a subset of their caregivers with the goal of revealing barriers and facilitators of adherence...
June 23, 2017: AIDS Care
https://www.readbyqxmd.com/read/28641987/food-deprivation-in-f0-generation-and-hypercaloric-diet-in-f1-generation-reduce-f2-generation-astrogliosis-in-several-brain-areas-after-immune-challenge
#5
T B Ogassawara, A Joaquim, C P Coelho, M M Bernardi, E Teodorov, M F M Martins, T B Kirsten, L V Bonamin, P D Dossa, L B Viebig, E F Bondan
AIMS: The effects of maternal food restriction during gestation in F0 generation followed by hypercaloric diet (HD) during puberty in F1 generation (F1HD) were investigated on astrocyte behavior of F2 generation. Also, the astrocyte behavior, after an immune challenge, was examined by the immunohistochemical expression of glial fibrillary acidic protein (GFAP) in several brain areas. METHODS: The body weight gain (BW) during development and in postnatal day (PND) 90-95, the retroperitoneal fat weight (RPF), and the size of larger and smaller adipocytes in the F1 generation were assessed to observe the effects of HD in female rats...
June 19, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28640839/assessment-of-recall-error-in-self-reported-food-consumption-histories-among-adults-particularly-delay-of-interviews-decrease-completeness-of-food-histories-germany-2013
#6
Maximilian Gertler, Irina Czogiel, Klaus Stark, Hendrik Wilking
INTRODUCTION: Poor recall during investigations of foodborne outbreaks may lead to misclassifications in exposure ascertainment. We conducted a simulation study to assess the frequency and determinants of recall errors. METHODS: Lunch visitors in a cafeteria using exclusively cashless payment reported their consumption of 13 food servings available daily in the three preceding weeks using a self-administered paper-questionnaire. We validated this information using electronic payment information...
2017: PloS One
https://www.readbyqxmd.com/read/28640707/response-assessment-in-neuro-oncology-clinical-trials
#7
Patrick Y Wen, Susan M Chang, Martin J Van den Bent, Michael A Vogelbaum, David R Macdonald, Eudocia Q Lee
Development of novel therapies for CNS tumors requires reliable assessment of response and progression. This requirement has been particularly challenging in neuro-oncology for which contrast enhancement serves as an imperfect surrogate for tumor volume and is influenced by agents that affect vascular permeability, such as antiangiogenic therapies. In addition, most tumors have a nonenhancing component that can be difficult to accurately quantify. To improve the response assessment in neuro-oncology and to standardize the criteria that are used for different CNS tumors, the Response Assessment in Neuro-Oncology (RANO) working group was established...
June 22, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28638781/bioinspired-mechano-sensitive-macroporous-ceramic-sponge-for-logical-drug-and-cell-delivery
#8
Changlu Xu, Zhihao Wei, Huajian Gao, Yanjie Bai, Huiling Liu, Huilin Yang, Yuekun Lai, Lei Yang
On-demand, ultrahigh precision delivery of molecules and cells assisted by scaffold is a pivotal theme in the field of controlled release, but it remains extremely challenging for ceramic-based macroporous scaffolds that are prevalently used in regenerative medicine. Sea sponges (Phylum Porifera), whose bodies possess hierarchical pores or channels and organic/inorganic composite structures, can delicately control water intake/circulation and therefore achieve high precision mass transportation of food, oxygen, and wastes...
June 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28638317/emergence-time-and-skin-melanin-spot-patterns-do-not-correlate-with-growth-performance-social-competitive-ability-or-stress-response-in-farmed-rainbow-trout
#9
Manuel Gesto, Peter V Skov, Alfred Jokumsen
In wild salmonid fish, specific individual behavioral traits have been correlated with the timing of fry emergence from their gravel spawning nests; Early emerging fish display more aggressive behavior and have a higher probability of becoming socially dominant, compared to fish that emerge at a later stage. Apart from aggression and dominance, other behavioral and metabolic traits, such as boldness, metabolic rate, or growth, have also been linked to emergence time. Altogether, the traits of early- and late-emerging fish resemble those of the proactive and reactive stress-coping style, respectively...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28636751/using-experimentation-to-understand-the-10-year-snowshoe-hare-cycle-in-the-boreal-forest-of-north-america
#10
C J Krebs, R Boonstra, S Boutin
Population cycles have long fascinated ecologists from the time of Charles Elton in the 1920s. The discovery of large population fluctuations in undisturbed ecosystems challenged the idea that pristine nature was in a state of balance. The 10-year cycle of snowshoe hares (Lepus americanus Erxleben) across the boreal forests of Canada and Alaska is a classic cycle, recognized by fur traders for more than 300 years. Since the 1930s ecologists have investigated the mechanisms that might cause these cycles. Proposed causal mechanisms have varied from sunspots to food supplies, parasites, diseases, predation, and social behaviour...
June 21, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28635635/identifying-bird-remains-using-ancient-dna-barcoding
#11
Love Dalén, Vendela K Lagerholm, Johan A A Nylander, Nick Barton, Zbigniew M Bochenski, Teresa Tomek, David Rudling, Per G P Ericson, Martin Irestedt, John R Stewart
Bird remains that are difficult to identify taxonomically using morphological methods, are common in the palaeontological record. Other types of challenging avian material include artefacts and food items from endangered taxa, as well as remains from aircraft strikes. We here present a DNA-based method that enables taxonomic identification of bird remains, even from material where the DNA is heavily degraded. The method is based on the amplification and sequencing of two short variable parts of the 16S region in the mitochondrial genome...
June 21, 2017: Genes
https://www.readbyqxmd.com/read/28634855/alpha-linolenic-acid-decreases-apoptosis-and-oxidized-phospholipids-in-cardiomyocytes-during-ischemia-reperfusion
#12
Riya Ganguly, Devin Hasanally, Aleksandra Stamenkovic, Thane G Maddaford, Rakesh Chaudhary, Grant N Pierce, Amir Ravandi
The omega-3 fatty acid, alpha linolenic acid (ALA) found in plant-derived foods induces significant cardiovascular benefits when ingested. ALA may be cardioprotective during ischemia; however, the mechanism(s) responsible for this effect is unknown. Isolated adult rat cardiomyocytes were exposed to medium containing ALA for 24 h and then exposed to non-ischemic (control), simulated ischemia (ISCH), or simulated ischemia/reperfusion (IR) conditions. Cardiomyocyte phospholipids were extracted and analyzed by an HPLC/electrospray ionization tandem mass spectrometry system...
June 20, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28634668/black-and-white-snub-nosed-monkey-rhinopithecus-bieti-feeding-behavior-in-a-degraded-forest-fragment-clues-to-a-stressed-population
#13
Zhi-Pang Huang, Matthew B Scott, Yan-Peng Li, Guo-Peng Ren, Zuo-Fu Xiang, Liang-Wei Cui, Wen Xiao
Rapid global deforestation has forced many of the world's primates to live in fragmented habitats, making the understanding of their behavioral responses to degraded and fragmented habitats a key challenge for their future protection and management. The black-and-white snub-nosed monkey (Rhinopithecus bieti) is an endangered species endemic to southwest China. The forest habitat ranges from near-continuous to fragmented. In this study, we investigated the activity budget and diet of a R. bieti population that live in an isolated and degraded habitat patch at Mt...
June 20, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28634592/euglycemic-diabetic-ketoacidosis-with-prolonged-glucosuria-associated-with-the-sodium-glucose-cotransporter-2-canagliflozin
#14
Daniel A Kelmenson, Kelsey Burr, Yusra Azhar, Paul Reynolds, Chelsea A Baker, Neda Rasouli
Sodium-glucose cotransporter-2 (SGLT2) inhibitors improve glycemic control by a reversible inhibition of the sodium-glucose cotransporters in the renal proximal tubules resulting in increased urinary glucose. This unique mechanism, independent of insulin secretion and beta cell function, has made this class of medication desirable in patients with type 2 diabetes. However in May 2015, the US Food and Drug Administration issued a safety warning pertaining to the development of diabetic ketoacidosis (DKA) with the use of SGLT2 inhibitors...
April 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28634536/telavancin-a-novel-semisynthetic-lipoglycopeptide-agent-to-counter-the-challenge-of-resistant-gram-positive-pathogens
#15
REVIEW
Biswadeep Das, Chayna Sarkar, Debasmita Das, Amit Gupta, Arnav Kalra, Shubham Sahni
Telavancin (TD-6424), a semisynthetic lipoglycopeptide vancomycin-derivative, is a novel antimicrobial agent developed by Theravance for overcoming resistant Gram-positive bacterial infections, specifically methicillin-resistant Staphylococcus aureus (MRSA). The US Food and Drug Administration (USFDA) had approved telavancin in 2009 for the treatment of complicated skin and skin structure infections (cSSSIs) caused by Gram-positive bacteria, including MRSA (S. aureus, Streptococcus agalactiae, Streptococcus pyogenes, Streptococcus anginosus group, or Enterococcus faecalis)...
March 2017: Therapeutic Advances in Infectious Disease
https://www.readbyqxmd.com/read/28634124/cell-disruption-and-lipid-extraction-for-microalgal-biorefineries-a-review
#16
REVIEW
Soo Youn Lee, Jun Muk Cho, Yong Keun Chang, You-Kwan Oh
The microalgae-based biorefinement process has attracted much attention from academic and industrial researchers attracted to its biofuel, food and nutraceutical applications. In this paper, recent developments in cell-disruption and lipid-extraction methods, focusing on four biotechnologically important microalgal species (namely, Chlamydomonas, Haematococcus, Chlorella, and Nannochloropsis spp.), are reviewed. The structural diversity and rigidity of microalgal cell walls complicate the development of efficient downstream processing methods for cell-disruption and subsequent recovery of intracellular lipid and pigment components...
June 12, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28632380/recent-progress-in-nanomaterial-based-optical-aptamer-assay-for-the-detection-of-food-chemical-contaminants
#17
Lingyi Lan, Yao Yao, Jianfeng Ping, Yibin Ying
Food chemical contaminant is a major factor to cause foodborne diseases and can do harm to human health. Hence, to develop robust, easy, and sensitive methods for rapid evaluation of food chemical contaminants is highly desirable. Nanomaterial-based optical aptasensors combined with the advantages of the high selectivity of optical detection techniques, excellent stability of aptamer, and the unique properties of nanomaterials have been recognized as useful tools for routine biosensing applications. The recent progress in nanomaterial-based optical aptamer assays to determine food chemical contaminants including heavy metals, toxins, pesticides, and antibiotics are presented in this paper...
June 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28631806/increasing-oil-concentration-affects-consumer-perception-and-physical-properties-of-mayonnaise-type-spreads-containing-kcl
#18
Damir Dennis Torrico, Witoon Prinyawiwatkul
Reducing sodium intakes remains a global challenge for the food industry. KCl is a potential salt substitute but imparts bitterness when used at high concentrations. Little is known about how oil concentrations (OC) affect consumers' perception of saltiness and bitterness in emulsion products such as mayonnaise containing KCl. We evaluated consumers' perception and physical properties of mayonnaise-type spreads at various oil and tastant (NaCl or KCl) concentrations. Consumers (N = 306) evaluated saltiness, bitterness, overall taste liking (OTL) and purchase intent (PI)...
June 20, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28631434/survival-of-spray-dried-and-free-cells-of-potential-probiotic-lactobacillus-plantarum-564-in-soft-goat-cheese
#19
Zorica Radulović, Jelena Miočinović, Nemanja Mirković, Milica Mirković, Dušanka Paunović, Marina Ivanović, Sanja Seratlić
A high viability of probiotics in food product, with a living cells threshold of 10(7) /cfu/g (colony-forming units/g) is a challenge to achieve in food production. Spray drying is an efficient and economic industrial method for probiotic bacterial preservation and its application in food products. In this study, the survival of free and spray-dried cells of potential probiotic strain Lactobacillus plantarum 564 after production and during 8 weeks of storage of soft acid coagulated goat cheese was investigated, as well as compositional and sensory quality of cheese...
June 19, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28630693/quality-of-food-frequency-questionnaire-validation-studies-in-the-dietary-assessment-of-children-aged-12-to-36-months-a-systematic-literature-review
#20
REVIEW
Amy Lovell, Rhodi Bulloch, Clare R Wall, Cameron C Grant
A child's diet is an important determinant of growth and development. Because of this, the accurate assessment of dietary intake in young children remains a challenge. A systematic search of studies validating FFQ methodologies in children 12 to 36 months of age was completed. English-language articles published until March 2016 were searched using three electronic databases (MEDLINE, EMBASE and CINAHL). Quality assessment of the identified studies was carried out using The Reduced Summary Score and EURopean micronutrient RECommendations Aligned (EURRECA) scoring system...
2017: Journal of Nutritional Science
keyword
keyword
76984
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"