nmr spectroscopy in food authentication

... b-ketothiolase; PaaZ, unknown, putative ring-cleavage enzyme, aldehyde dehydrogenase domain (N-terminus), MaoC-like protein domain (C-terminus) PaaX and PaaY may be involved in regulation (Andover, MA, USA) ... mixtures containing 0.1 M phosphate, pH 6.5, 40 mg L-[U-13C9]phenylalanine or L-[ring-13C6]phenylalanine, 740 kBq [U-14C9]phenylalanine, and U L-amino acid oxidase (Fluka, Neu-Ulm, Germany) in a total ... mutant strains grew on succinate, but none grew on adipate Transformation of labeled phenylacetate into labeled products by the mutants Mutant cell suspensions were incubated in buffer containing traces...

Ngày tải lên: 23/03/2014, 18:20

... zero-emission systems in food industries The soy-sauce production process was studied as an example of food industry CHARACTERISTICS OF FOOD INDUSTRY The food industry is suitable in demonstrating the concept ... Wheat,91 Rinsing Fig.2 Bulk materials flow analysis Roasting Soybean,34 Wheat,35 Water,127 Water,0 Rinsing Roasting Cooling Cooling　 Koji Salt water,349 Koji,73 Salt water,0 Mixing,795 Mixing,81 ... flow of all components involved in the production lines At least, the specific materials that are essential in establishing the zero-emission system must be considered In food industry, we selected...

Ngày tải lên: 05/09/2013, 08:40

... present, how high the risk of contracting cancer is in humans after the intake of acrylamide-containing foods (Anon., 2004a-d) In this report, it is aimed to investigate the analysis methods of ... during the treatment of drinking water Acrylamide does not bind to soil but is degraded by micro-organisms within a few days in soil and water The acrylamide that does not coagulate remains in ... is in humans after the intake of acrylamide-containing foods In principle, the so-called Alara Principle, i.e as low as reasonably achievable, applies to genotoxic and carcinogenic substances The...

Ngày tải lên: 27/09/2013, 18:30

Ngày tải lên: 07/12/2013, 16:53

... ever-changing array of plant toxins in an evolving world; if a herbivore had defenses against only a specic set of toxins, it would be at great disadvantage in obtaining new food when favored foods ... only in the PDR for Herbal Medicines (Gruenwald et al., 1998) Poisoning epidemics by pyrrolizidine alkaloids have occurred in the developing world In the United States, poisonings, including deaths, ... as candidates for carcinogenicity testing These include solanine and chaconine, the main alkaloids in potatoes, which are cholinesterase inhibitors that can be detected in the blood of almost...

Ngày tải lên: 14/02/2014, 22:20

... concentrations in Lowermoor treatment works and in trunk main system Indications of copper concentrations in the contaminated water Other water pollution incidents involving aluminium sulphate Key points ... analysing for contaminants in water, that samples are taken into a prepared vessel in order to minimise contamination from environmental sources When sampling in domestic premises, drinking water ... guidelines take the form of a maximum recommended concentration for a contaminant in drinking water In the case of acidity, the Guideline Value is a recommended range within which the pH of drinking...

Ngày tải lên: 17/02/2014, 10:20

... (Table 1) are in agreement with this and indicate that the monosaccharide residues include Fuc, in addition to one reducing terminal 4-linked Glc, four Gal (two terminal, one internal 3-linked and ... methylation analysis (Table 1) are in agreement with this and indicate that the monosaccharide residues include one reducing terminal 4-linked Glc, four Gal (two terminal, one internal 3-substituted and ... (Table 1) are in agreement with this and indicate that the monosaccharide residues include three terminal Fuc1-, two terminal Gal1-, one reducing terminal -4Glc, together with internal monosubstituted...

Ngày tải lên: 19/02/2014, 12:20

... equilibria involving Mn(III)heme and myristate binding to HSA Binding sites are indicated with the notation (FA1)P(FAx)–(FAS), where FA1 is the heme binding site, acting as myristate binding site ... binding to HSA–heme suggesting that sites FA6–7 are low-affinity fatty acid binding sites [1,6,7,9–17] The fatty acid binding site FA1, located in subdomain IB (Fig 1), acts as the heme binding ... quantities of protein utilizing the principle of protein-dye-binding Anal Biochem 72, 248–254 46 Wyman J (1964) Linked functions and reciprocal effects in hemoglobin: a second look Adv Protein Chem 19,...

Ngày tải lên: 20/02/2014, 02:22

... indispensable for the introduction of new technologies into the food chain The example of biotechnology in food production in Europe indicates that consumers will increasingly call for more information ... effect in maintaining food quality and increasing sustainability is obtained by means of packaging technologies (new environmental friendly packaging methods and materials like edible coating/biodegradable ... from food products The basic idea behind the reversed food chain thinking is the analysis of the interaction between the consumer and each individual phase of the food chain Recent developments in...

Ngày tải lên: 22/02/2014, 05:20

... firm understanding of the major consumer health concerns influencing purchasing decisions and eating habits Identifying the main health-related issues influencing the food and drinks industry at ... Atkins Revolution Industry Opinion Survey, April 2004 Business Insights According to Janine Wilson, an independent nutritionist based in the UK: “The rising levels of obesity are due to a combination ... conducted in July 2004; the ‘Future Innovations in Food and Drinks’ industry opinion survey attracted responses from 323 industry executives and was conducted in June 2004; the ‘Healthy and Diet Food...

Ngày tải lên: 06/03/2014, 05:21

... completed with long-chain PS (see below) in order to study the in uence of the carbohydrate polymer chain on binding Four samples were prepared, two contained the binding middle-chain PSNH4OH/HF from ... ligand binding [16], it could be shown that mAb 2625 binds directly to the N-methylated structures in the polymer This is the ®rst description of antibody-LPS binding examined by STD NMR spectroscopy ... KH2PO4, pH 7.4) Ó FEBS 2002 The protein concentration was determined using the bicinchoninic acid protein assay reagent kit (Pierce) NMR spectroscopy 1D 1H NMR and STD spectra were recorded with...

Ngày tải lên: 08/03/2014, 10:20

... used in pigs to treat joint infections and pneumonia Several combination products containing lincomycin are approved for use in food- producing species A lincomycin–spectinomycin product administered ... lincomycin, clindamycin, and pirlimycin; two of these drugs—lincomycin and pirlimycin—are approved for use in food- producing species Lincosamides are derivatives of an amino acid and a sulfur-containing ... foot-rot in sheep A lincomycin–sulfadiazine combination product administered in- feed is used for the treatment of atrophic rhinitis and enzootic pneumonia in pigs Lincomycin–neomycin combination...

Ngày tải lên: 11/03/2014, 03:20

... 1973) Laminarin, a linear glucan containing mainly &D-(1-3) linked glucose, with some p-~-(1+6) branching points, is found in Laminaria, a brown seaweed Mannans, in which mannose units are linked ... they all bind more iodine and give a higher A,, with 12/KIsolutions, leading to errors in determining the amylose content in starch when using the blue value (BV) or iodine affinity (IA) in the ... with iodine reagent (Wx pollen, containing normal starch, stains black; wx pollen, lacking amylose, stains red) and, by counting the frequency of the wild-type recombinants, he obtained a fine structure...

Ngày tải lên: 15/03/2014, 09:20

... N]Arginine.HCl, L-[ N]aspartic acid, L-[U- N]aspa15 15 ragine.H2O, L-[ N]cysteine, L-[ N]glutamic acid, 15 15 15 L-[ N]glutamine[aN], [ N]glycine, L-[ N]histidine[aN] HCl, L-[15N]methionine, ... depleted in natural amino acids Absence of free amino acids from the cell extract is a prerequisite for efficient incorporation of labelled amino acids into target proteins Furthermore, the protein ... Furthermore, the protein yields increased with increasing amino acid concentration (Fig 1, lanes 1–8), indicating that the concentrations of amino acids limit protein synthesis at < mM After ultracentrifugation...

Ngày tải lên: 16/03/2014, 18:20

... an illumination time of h Continuous spinning of the NMR tube minimized the self-shadowing of the highly concentrated sample 1H -NMR measurements were carried out in the dark without spinning on ... indicated by the spectral data of the E-configuration (Fig 2) Initial NMR spectroscopy was performed using the intact a-PEC, but protein aggregations caused extreme broadening of the signals In ... concerning the results of mass spectrometry and N-terminal amino acid sequencing (Table 1) The two N-terminal helices are responsible for the aggregation of a-PEC in solution The mobile D pyrrole ring...

Ngày tải lên: 17/03/2014, 10:20

... : Adding, Deleting elements, Circular Queue : Adding and Deleting elements, Merging Problem Implementation of linked lists : Inserting, Deleting, Inverting a Linked List Sorting and Searching ... Determination of Ash in food sample Determination of Crude Fat in food sample Determination of Acidity & pH in food sample/beverages Determination of total, non-reducing and reducing sugars Determination ... Syllabus of B.Tech in Food Technology Food Chemistry by Linhinger Chemical changes in food during processing by Richardson Nutrition and Dietetics by Rose FT 402 : Principles of Food Preservation...

Ngày tải lên: 18/03/2014, 00:20

... DETERMINATION SULPHONAMIDES RESIDUES IN FOOD BY HIGH PERFOPvMANCE LIQUID CHROMATOGRAPHY PART SEPARATION AND QUANTIFICATION SULFAGUANIDINE, SULFAMETHOXYPYRIDINE, SULFADOXINE AND SULFAMETHOXAZONE IN ... LIEU THAM KHAO Chu Dinh Binh, Nguyen Phuong Thanh, Nguyin Thj Anh Nguyet, Pham Luan - Xac djnh du lugng khang khuin thuc phim bing phuang phap sac ki Idng hieu nang cao (HPLC), Phin Toi uu boa cac ... khiet phan tich da tinh trudc, boa tan bing khoang 900 ml nudc cit hai lan, chinh pH ciia dung djch bing axit axetic 20% loai tinh khiet boa hgc tdi pH = 4,5 Chuyen vao binh djnh muc dung tich...

Ngày tải lên: 20/03/2014, 21:20

... corresponding residues in a-CTX that are involved in receptor binding) would be interesting because of the resultant alteration in the binding affinity Considering flexibility of loop II in receptor binding, ... The NMR structure reveals some minor conformational changes that might be very important in studying the mechanism of their receptor binding The importance of cationic residues in direct binding ... residues are shown in blue, red and white, respectively and 59% identity, respectively (Fig 1) These toxins all have 10 cysteine residues that play a major role in determining and maintaining their rigid...

Ngày tải lên: 23/03/2014, 13:20

... Solving Problems in Food Engineering Stavros Yanniotis, Ph.D Author Solving Problems in Food Engineering Stavros Yanniotis, Ph.D Department of Food Science and Technology ... which are frequently used in food processing, e.g., evaporation, drying, thermal processing, cooling and freezing, etc The most difficult part of a course in food engineering is often considered ... zero at the critical point 19 Superheated steam is preferred to saturated steam as a heating medium in the food industry S Yanniotis, Solving Problems in Food Engineering Ó Springer 2008 Use of Steam...

Ngày tải lên: 26/03/2014, 09:05

... restraints are included in the count Unfortunately, many NMR studies give a misleading indication of the true number of structural restraints by including interproton distances that not restrain ... discussed in more detail in the accompanying review [1] Increasing the diversity of experimental restraints Fig Histogram comparing the percentage of protein structures in the PDB determined using ... NPS, Maciejewski MW, dos Remedios CG & King GF (2006) Mapping the phosphoinositide-binding site on chick cofilin explains how PIP2 regulates the cofilin-actin interaction Mol Cell 24, 511–522 Wang...

Ngày tải lên: 29/03/2014, 00:20