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Food instability

E Amstad, M Chemama, M Eggersdorfer, L R Arriaga, M P Brenner, D A Weitz
Monodisperse drops with diameters between 20 μm and 200 μm can be used to produce particles or capsules for many applications such as for cosmetics, food, and biotechnology. Drops composed of low viscosity fluids can be conveniently made using microfluidic devices. However, the throughput of microfluidic devices is limited and scale-up, achieved by increasing the number of devices run in parallel, can compromise the narrow drop-size distribution. In this paper, we present a microfluidic device, the millipede device, which forms drops through a static instability such that the fluid volume that is pinched off is the same every time a drop forms...
October 18, 2016: Lab on a Chip
Muhammad Imran, Muhammad Nadeem, Muhammad Faisal Manzoor, Amna Javed, Zafar Ali, Muhammad Nadeem Akhtar, Muhammad Ali, Yasir Hussain
BACKGROUND: Chia (Salvia hispanica L.) seeds have been described as a good source of lipids, protein, dietary fiber, polyphenolic compounds and omega-3 polyunsaturated fatty acids. The consumption of chia seed oil helps to improve biological markers related to metabolic syndrome diseases. The oil yield and fatty acids composition of chia oil is affected by several factors such as pre-treatment method and size reduction practices. Therefore, the main mandate of present investigate was to study the effect of different seed pre-treatments on yield, fatty acids composition and sensory acceptability of chia oil at different storage intervals and conditions...
2016: Lipids in Health and Disease
J Simar, M Godet, J-D Hecq, M Closset, P Gillet, C Langhendries, B Bihin, J Jamart, L Galanti
INTRODUCTION: The aim of the study was to investigate the long-term stability of dexamethasone 10mg associated with alizapride 100mg or ondansetron 8mg in 100mL of 0.9% sodium chloride solution stored at 5±3°C. METHOD: Solutions of 0.9% sodium chloride 100mL in polyolefin bags (n=5) containing approximately dexamethasone (DEX) 10mg associated with alizapride (ALI) 100mg or ondansetron (OND) 8mg were prepared under aseptic conditions and stored about 30 days at 5±3°C...
September 12, 2016: Annales Pharmaceutiques Françaises
Xihan Guo, Xu Wang
The fruit of Phyllanthus emblica Linn. (PE) has been widely consumed as a functional food and folk medicine in Southeast Asia due to its remarkable nutritional and pharmacological effects. Previous research showed PE delays mitotic progress and increases genomic instability (GIN) in human colorectal cancer cells. This study aimed to investigate the similar effects of PE by the biomarkers related to spindle assembly checkpoint (SAC), mitotic aberrations and GIN in human NCM460 normal colon epithelial cells. Cells were treated with PE and harvested differently according to the biomarkers observed...
2016: International Journal of Molecular Sciences
Sofia Nestora, Franck Merlier, Elise Prost, Karsten Haupt, Claire Rossi, Bernadette Tse Sum Bui
Betanin is a natural pigment with significant antioxidant and biological activities currently used as food colorant. The isolation of betanin is problematic due to its instability. In this work, we developed a fast and economic procedure based on molecularly imprinted solid-phase extraction (MISPE) for the selective clean-up of betanin and its stereoisomer isobetanin from beetroot extracts. Dipicolinic acid was used as template for the MIP preparation because of its structural similarity with the chromophore group of betanin...
September 23, 2016: Journal of Chromatography. A
Hui Luan, Leia M Minaker, Jane Law
BACKGROUND: Findings of whether marginalized neighbourhoods have less healthy retail food environments (RFE) are mixed across countries, in part because inconsistent approaches have been used to characterize RFE 'healthfulness' and marginalization, and researchers have used non-spatial statistical methods to respond to this ultimately spatial issue. METHODS: This study uses in-store features to categorize healthy and less healthy food outlets. Bayesian spatial hierarchical models are applied to explore the association between marginalization dimensions and RFE healthfulness (i...
2016: International Journal of Health Geographics
Fengping Wang, Cunsheng Zhang, Shuhao Huo
To enhance the stability and efficiency of an anaerobic process, the influences of fluid dynamics on the performance of anaerobic digestion and sludge granulation were investigated using computational fluid dynamics (CFD). Four different propeller speeds (20, 60, 100, 140 r/min) were adopted for anaerobic digestion of food waste in a 30 L continuously stirred tank reactor (CSTR). Experimental results indicated that the methane yield increased with increasing the propeller speed within the experimental range...
August 17, 2016: Environmental Technology
E Lintingre, F Lequeux, L Talini, N Tsapis
Powders of nanoparticles are volatile, i.e. easily disperse in air, which makes their handling difficult. Granulation of nanoparticle powders provides a solution to that issue, and it is generally performed by spray drying the nanoparticles that have been suspended in a liquid. Spray drying of a colloidal suspension consists of atomising the suspension into droplets by a fast flowing and hot gas. Once the droplets dried, the resulting dry grains/microparticles can be used in a wide range of applications - food, pharmaceutics, fillers, ceramics, etc...
September 28, 2016: Soft Matter
Young Ok Jeon, Ji-Soo Lee, Hyeon Gyu Lee
Resveratrol (RES), a polyphenolic compound found in grape skins, is a potent antioxidant with broad health benefits. However, its utilization in food has been limited by its poor water solubility, instability, and low bioavailability. The purpose of this study is to improve the solubility, stability, and cellular uptake of RES by nanoencapsulation using chitosan (CS) and γ-poly (glutamic acid) (γ-PGA). The size of nanoparticles significantly decreases with a decrease in the CS/γ-PGA ratio (p<0.05). The nanoparticle size with CS/γ-PGA ratio of 5 was 100-150nm...
November 1, 2016: Colloids and Surfaces. B, Biointerfaces
Jeffrey I Lipton, Hod Lipson
Additive manufacturing of cellular structures has numerous applications ranging from fabrication of biological scaffolds and medical implants, to mechanical weight reduction and control over mechanical properties. Various additive manufacturing processes have been used to produce open regular cellular structures limited only by the resolution of the printer. These efforts have focused on printing explicitly designed cells or explicitly planning offsets between strands. Here we describe a technique for producing cellular structures implicitly by inducing viscous thread instability when extruding material...
2016: Scientific Reports
Iram Gull, Attia Javed, Muhammad Shahbaz Aslam, Roohi Mushtaq, Muhammad Amin Athar
The use of Moringa oleifera as natural food preservative has been evaluated in the present study. In addition, for quality assurance, the study has also been focused on the shelf life of product to authenticate the identification of plant by development of DNA based marker. Among the different extracts prepared from flower pods of Moringa oleifera, methanol and aqueous extract exhibited high antibacterial and antioxidant activity, respectively. The high phenolic contents (53.5 ± 0.169 mg GAE/g) and flavonoid contents (10...
2016: BioMed Research International
Lalitagauri Ray, Sunita Pramanik, Debabrata Bera
BACKGROUND: The enzyme catalyzed process technology has enormous potential in the food sectors as indicated by the recent studies. It is very well realized that the adaptation of the enzyme catalyzed process depends on the availability of enzyme in affordable prices. OBJECTIVE: Enzymes may be used in different food sectors like dairy, fruits & vegetable processing, meat tenderization, fish processing, brewery and wine making, starch processing and many other...
July 27, 2016: Recent Patents on Biotechnology
Supin Chompoopong, Sunit Jarungjitaree, Tideeporn Punbanlaem, Thanaporn Rungruang, Sukumal Chongthammakun, Aikkarach Kettawan, Thongchai Taechowisan
The effects of germinated brown rice (GBR) on the motor deficits and the dopaminergic (DA) cell death were investigated in Parkinson's-like disease (PD) rats. Reactive oxidative species generated by chronic subcutaneous injection of rotenone (RT) lead to neuronal apoptosis particularly in the nigrostriatal DA system and produce many features of PD, bradykinesis, postural instability and rigidity. In this study, 4-phenylbutyric acid (4-PBA), previously reported to inhibit RT-induced DA cell death, was used as the positive control...
September 2016: Neuromolecular Medicine
Daniel DeMiguel
Although the initial formulation of modern concepts of adaptive radiation arose from consideration of the fossil data, rigorous attempts to identify this phenomenon in the fossil record are largely uncommon. Here I focus on direct evidence of the diet (through tooth-wear patterns) and ecologically-relevant traits of one of the most renowned fossil vertebrates-the Miocene ruminant Hoplitomeryx from the island of Gargano-to deepen our understanding of the most likely causal forces under which adaptive radiations emerge on islands...
2016: Scientific Reports
Ellen E Connor, Nicole R Jackson, Robin R McGoey
A 51-year-old man presented to a community based emergency department with bilateral lower extremity swelling that began four days prior and that had evolved into recent blister formation on the left lower extremity. Medical history was significant only for hypertension and a recent self-described episode of "food poisoning" five days earlier characterized by diarrhea, nausea, and vomiting that quickly resolved. Physical exam revealed marked bilateral lower extremity edema and an ecchymotic rash below the knee...
May 2016: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
Paulo D S Peixoto, Guilherme M Tavares, Thomas Croguennec, Aurélie Nicolas, Pascaline Hamon, Claire Roiland, Saïd Bouhallab
Under specific conditions, mixing two oppositely charged proteins induces liquid-liquid phase separation. The denser phase, or coacervate phase, can be potentially applied as a system to protect or encapsulate different bioactive molecules with a broad range of food and/or medical applications. The optimization of the design and efficiency of such systems requires a precise understanding of the structure and the equilibrium of the nanocomplexes formed within the coacervate. Here, we report on the nanocomplexes and the dynamics of the coacervates formed by two well-known, oppositely charged proteins β-lactoglobulin (β-LG, pI ≈ 5...
August 9, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
Narendra Nath Jha, Dhiman Ghosh, Subhadeep Das, Arunagiri Anoop, Reeba S Jacob, Pradeep K Singh, Narasimham Ayyagari, Irishi N N Namboothiri, Samir K Maji
Alpha-synuclein (α-Syn) aggregation into oligomers and fibrils is associated with dopaminergic neuron loss occurring in Parkinson's disease (PD) pathogenesis. Compounds that modulate α-Syn aggregation and interact with preformed fibrils/oligomers and convert them to less toxic species could have promising applications in the drug development efforts against PD. Curcumin is one of the Asian food ingredient which showed promising role as therapeutic agent against many neurological disorders including PD. However, the instability and low solubility makes it less attractive for the drug development...
2016: Scientific Reports
Rui Yang, Guoyu Sun, Min Zhang, Zhongkai Zhou, Quanhong Li, Padraig Strappe, Chris Blanchard
The instability and low bioavailability of polyphenols limit their applications in food industries. In this study, epigallocatechin gallate (EGCG) and soybean seed ferritin deprived of iron (apoSSF) were fabricated as a combined double shell material to encapsulate rutin flavonoid molecules. Firstly, due to the reversible assembly characteristics of phytoferritin, rutin was successfully encapsulated within apoSSF to form a ferritin-rutin complex (FR) with an average molar ratio of 28.2: 1 (rutin/ferritin). The encapsulation efficiency and loading capacity of rutin were 18...
September 2016: Plant Foods for Human Nutrition
Theresa Zwickel, Horst Klaffke, Keith Richards, Michael Rychlik
An analytical method based on high performance liquid chromatography (HPLC) and tandem mass spectrometry (MS/MS) detection for the simultaneous quantification of 12 Alternaria toxins in wine, vegetable juices and fruit juices was developed. Excellent chromatographic performance was demonstrated for tenuazonic acid (TeA) in a multi-analyte method. This comprehensive study is also the first to report the determination of TeA, alternariol (AOH), alternariol monomethyl ether (AME), tentoxin (TEN) and altenuene (ALT), altertoxin I (ATX-I), altertoxin II (ATX-II), altenuisol (ATL), iso-altenuene (isoALT), altenuic acid III (AA-III) and the AAL toxins TB1 und TB2 in samples from the German market...
July 15, 2016: Journal of Chromatography. A
Weitao Shuai, Ratul Kumar Das, Mitra Naghdi, Satinder Kaur Brar, Mausam Verma
Lipase is one of the most widely used enzymes and plays an important role in biotechnological and industrial processes including food, paper and oleochemical industries as well as in pharmaceutical applications. However, its aqueous solubility and instability make its application relatively difficult and expensive. Immobilization technique is often used to improve lipase performance and the strategy has turned out to be a promising method. Immobilized lipase on nanomaterials (NMs) has shown superiority to the free lipase, such as improved thermal and pH stability, longer stable time and the capacity of being reused...
June 9, 2016: Biotechnology and Applied Biochemistry
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