Search Results
Results 251 - 300 of 314
< 1 2 3 4 5 6 7 >
Rubery E D - - 1990
The U.K. Committee on Toxicity of Chemicals in Food, Consumer Products and the Environment (COT) provides advice to government on the safety-in-use of additives and on the possible health hazards from contaminants in food. In the past the COT has given advice on additives in descriptive rather than numerical terms; ...
Anderson D M - - 1990
Combretum gums, readily available at low prices in East and West Africa, may be offered for sale as 'gum arabic'. Vigilance is necessary to detect such misrepresentations because Combretum gums differ greatly from gum arabic (Acacia senegal (L.) Willd.) in terms of quality, solution properties and value. Moreover, because there ...
Hansen S C - - 1990
Permitted levels of use for food additives should agree with the acceptable daily intakes (ADIs) established by toxicologists. To ensure accordance, nutritional and physiological factors can be used to estimate high intakes of food and beverages. Appetite and thirst (energy and liquid requirements) are such quantitative factors. They are universal ...
Anderson D M - - 1990
Only three gum exudates are permitted for pharmaceutical and food use by international regulatory authorities, viz. gum tragacanth (Asiatic Astragalus spp.), gum karaya (Sterculia spp.) and gum arabic [Acacia senegal (L.) Willd.], but a wide range of other tree exudates is used for a variety of uses in their countries ...
Tebbutt G M - - 1989
The possible relationship between the results of a microbiological sampling programme and visual inspections carried out in local food-manufacturing premises was examined. Using five main parameters - overall appearance, personal hygiene, risk of contamination, temperature control, and training and education - a visual inspection rating score was established for each ...
Weisburger E K - - 1989
Advances in analytical chemistry, as applied to foods, as well as further investigations of the role of essential trace elements, constituents of natural products, and metabolic processes, have all shown that the Delaney clause of the 1958 Food Additives Amendment is an anachronism. Although the limitations of this clause are ...
Pachor M L - - 1989
We present a case of Melkersson-Rosenthal syndrome that occurred in an adult patient who experienced intolerance to the food additives sodium benzoate and tartrazine. The main symptoms were the facial swelling, hypertrophy of the gums, and a typical infiltration of lymphocytes and plasma cells around the small vessels observed in ...
Schaner A M - - 1989
(Z)-11-Octadecenyl acetate (Z11-18∶Ac) was identified as the aggregation pheromone ofDrosophila mauritiana, D. yakuba, andD. rajasekari. The amount of pheromone in the ejaculatory bulb of male flies increased with age, reaching plateau levels of ca. 240, 800, and 1100 ng/fly forD. mauritiana, D. yakuba, andD. rajasekari, respectively. Thirty to 50% of ...
Poulsen E - - 1989
The influence of toxicology on legislation is quite clear in countries where chemicals are regulated by the authorities. There is normally a toxicological evaluation--in addition to other considerations--behind sales and use permissions and the levels that are accepted in food, air, water, etc. How does legislation affect toxicology? If there ...
Schaner A M - - 1989
(Z)-11-Octadecenyl acetate (Z11-18∶Ac) and (Z)-11-eicosenyl acetate (Z11-20∶Ac) were identified as the aggregation pheromones ofDrosophila ananassae, andZ11-20∶Ac was identified as the aggregation pheromone ofDrosophila bipectinata. Z11-18∶Ac andZ11-20∶Ac were not attractive alone; however, in combination with fermenting food odors, the acetates attracted flies of both sexes in a wind-tunnel olfactometer. The pheromones ...
White P R - - 1989
Over 200 beetle- and food-produced volatiles were collected from cultures of the saw-toothed grain beetleOryzaephilus surinamensis (L.) on oats. It proved possible to develop the electroantennogram recording technique for these beetles, despite their small size, allowing volatiles causing antennal responses to be identified by coupled GC-EAG and subsequent GCMS techniques. ...
Anderson D M - - 1989
Gum tragacanth (GT), affirmed as GRAS within the USA since 1961, was evaluated as 'ADI not specified' by JECFA in 1985. Within the EEC, GT has been permitted temporarily as a food additive (E413), without an ADI, since 1974; a decision regarding its permanent status must be reached before the ...
Bitsch R - - 1989
The biotin content of plant and animal food samples as well as of human plasma and urine specimens was assessed by a modified protein binding assay (PBA). Protein bound biotin in samples was released by digestion with papain, food samples were in addition treated previously with liquid nitrogen. Comparing analyses ...
Schaner A M - - 1989
(Z)-11-Eicosenyl acetate (Z11-20:Ac) was identified as the aggregation pheromone inDrosophila malerkotliana. The pheromone (200-300 ng/fly) was isolated from hexane extracts of the ejaculatory bulb of sexually mature male flies. Males released very little, if any,Z11-20:Ac to the food at any time. During mating there was a transfer of ca. 100 ...
Arruda J A - - 1989
1. The permeability of the isolated turtle urinary bladder to ammonia was investigated by varying the ratio of NH3 to NH4+ concentration in the serosal bath and measuring the flux of ammonia into the mucosal bath. 2. The permeability of the turtle bladder to NH3 was in the range of ...
Pierce H D HD - - 1988
When feeding on rolled oats, male square-necked grain beetles,Cathartus quadricollis (Guér.), produced the aggregation pheromone (3R,6E)-7-methyl-6-nonen-3-yl acetate, for which the trival name "quadrilure" is proposed. The pheromone was highly attractive to both sexes in a two-choice, pitfall olfactometer modified to retain responding beetles by placing a food stimulus (an oat ...
Oehlschlager A C - - 1988
Males of five sympatric species of economically damaging cucujid grain beetles,Cryptolestes ferrugineus (Stephens),C. pusillus (Schönhen),C. turcicus (Grouvelle),Oryzaephilus mercator (Fauvel), andO. surinamensis (L.), produce macrolide aggregation pheromones especially in the presence of food. Work leading to the isolation, identification, and establishment of biological activity of these semiochemicals is reviewed. The trivial ...
Acheson S A - - 1988
At equilibrium, water addition to the 5,6 double bond of NADH was observed to favor the hydrate by a factor of approximately 100. Hydration generates two epimers of NADHX (beta-6-hydroxy-1,4,5,6-tetrahydronicotinamide adenine dinucleotide). Only the 6S epimer of the hydrate was found to serve as a true substrate for an ATP-dependent ...
O'Malley M A - - 1988
We investigated the occurrence of cutaneous depigmentation (vitiligo) among employees of a company that manufactured hydraulic pumps. The interiors of these pumps were injection-molded with rubber. We identified a small but significant cluster of vitiligo cases among a group of employees who frequently handled the rubber used in this injection ...
Berger H - - 1988
1. The anticoccidial activity of maduramicin ammonium (5 mg/kg food) administered alone or with roxarsone (50 mg/kg food) and/or avoparcin (10 mg/kg food) was evaluated in battery-reared broilers artificially challenged with recent field culture mixtures containing Eimeria acervulina, E. maxima and E. tenella or E. mivati, E. necatrix and E. ...
Fishbein L - - 1988
Fructooligosaccharides are naturally occurring compounds that have been reported in a variety of plants. Neosugar is a fructooligosaccharide mixture of 1F-(1-beta-fructofuranosyl)-sucrose polymers which is produced on a commercial scale from sucrose using a fungal fructosyltransferase. The resulting product is 0.4 to 0.6 times as sweet as sugar and is resistant ...
Lu F C - - 1988
The acceptable daily intake (ADI) approach to toxicological evaluation was initiated by the Joint FAO/WHO Expert Committee on Food Additives in 1961. The procedure involves collecting all relevant data, ascertaining the completeness of the available data, determining the no-effect level using the most sensitive indicator of the toxicity, and applying ...
Wilkinson P J - - 1988
Food hygiene in British hospitals is reviewed in the context of national trends in food poisoning and changes in food legislation. New methods of large scale catering such as the cook-chill system are considered, and the safe operation of such a system in a typical health district is described. The ...
Penttilä P L - - 1988
An estimation of the intakes of 30 food additives in Finland was conducted combining analytical data, food balance sheets, import and export statistics. The results indicated that most calculated average food additive intakes were well below the ADI values and internationally at an acceptable level. The intakes of nitrates, nitrites, ...
Beckers H J - - 1988
Serious consequences can arise from lack of hygiene in mass catering. The uncritical use of routine microbiological tests purporting to measure hygiene merely creates a false sense of security. The microbiological safety of food is achieved by as far as possible ensuring the absence of pathogenic microorganisms and by all ...
Fennema O R - - 1987
The use of food additives originated in ancient times but did not engender controversy until the early 1800s, when intentional food adulteration became appallingly common in some countries. Problems with intentional food adulteration continued until about 1920, when regulatory pressures and effective methods of food analysis reduced the frequency and ...
- - 1987
In this decision, the Supreme Court of India expressed its shock that an application from a women who complained of having been kept in illegal confinement against her wishes received in the Registry on 15 January 1987 was not placed before the Court until two and a half months later. ...
Devi L - - 1986
Dynorphin B (rimorphin) is formed from leumorphin (dynorphin B-29) by the action of a thiol protease from rat brain membranes, in a single step. This represents a "single-arginine cleavage" between threonine-13 and arginine-14 of the substrate. We have observed that in addition to dynorphin B, dynorphin B-14 is formed from ...
Hattan D G - - 1986
In this third paper, we focus on a subset of 58 additives in the Priority-Based Assessment of Food Additives (PAFA) Project that have been associated in toxicity studies with specific toxic effects of inherently high concern. Additives producing these effects are assigned to categories based on chemical structure. A probability ...
Phelps M - - 1986
The microbiological hazard to staff of used instruments and equipment when returned to the HSDU appears to be small providing reasonable precautions are taken (Parsons et al, 1985). Nevertheless, little evidence is available on the contamination of used equipment or the efficiency of cleaning and disinfection methods.
Modderman J P - - 1986
A review of the current literature indicates that scientific knowledge of sulfiting agents in food is changing rapidly. Many of the old assumptions about usage of sulfiting agents have been put in doubt by new scientific data. Some basic definitions of sulfiting agents and their chemical behavior in food are ...
Eiki T - - 1986
Four different preparations of skeletal subfragment-1, denoted in this report as S1(Aa), S1(Ab), S1(Ba), and S1(Bb), and two different preparations of cardiac subfragment-1, denoted as S1(A) and S1(B), were obtained as described in our recent report (J. Biochem. 97, 965, 1985). (i) The four preparations were obtained from chicken breast ...
Millar J G - - 1985
Two biologically active macrolides were isolated from Porapak Q-captured beetle and frass volatiles ofCryptolestes turcicus (Grouvelle) and identified spectroscopically as (Z,Z)-5,8-tetradecadien-13-olide (I) and (Z)-5-tetradecen-13-olide (II). Natural I was active alone and was synergized by inactive II. The pheromones were male-produced but attractive to both sexes. Pheromone production increased dramatically when ...
Rulis A M - - 1985
We examine in greater depth some general toxicity parameters that have been compiled for food additives in the Priority-Based Assessment of Food Additives project. Correlations between chemical structure categories and basic parameters such as lowest effect level, highest no-effect level, and study duration indicate (among other things) trends in these ...
Reinharz A C - - 1985
Using an aqueous extraction followed by ultrafiltration through Amicon Diaflo membranes, two ovine pineal fractions were obtained, which contain immunoreactive neurophysin. The presence of neurophysin was monitored by radioimmunoassay, employing an antiserum raised against pituitary bovine neurophysin and selected because it reacts with neurophysins of many other mammals. From 50 ...
Ciuffreda K J - - 1985
Although the spatial frequency dependence of accommodation is well established, characteristics of the accommodative response profile may vary significantly, thus supporting opposing theories of accommodation control. We demonstrate the pronounced influence of instruction and higher level control on such accommodation profiles. The results suggest that extreme care be taken in ...
Denner W H - - 1984
Colours and preservatives are only two of the many classes of additives in food but they are of interest because many reported cases of sensitivity involve these two groups of substances. Preservatives present the greatest potential health hazard being, by definition, biologically active. Colours and other additives are required to ...
Arnold D L - - 1984
Saccharin, like most of the artificial sweeteners, was discovered quite by accident. The controversy regarding its use as a food additive is reflected by the number of chronic/carcinogenic studies conducted to assess its safety. Two chronic studies were conducted prior to the ban of cyclamates in 1969, at which time ...
Rulis A M - - 1984
The principles outlined in the Bureau of Foods' recently published Toxicological Principles for the Safety Assessment of Direct Food Additives and Color Additives Used in Food (the Redbook) have been systematically applied to a Bureau of Foods food additive data base comprising nearly 1600 food and color additives and synthetic ...
Constantine J W - - 1984
Trimazosin is a quinazoline antihypertensive agent structurally related to the selective alpha 1-adrenoceptor blocker prazosin. Trimazosin has been shown previously to have less affinity for alpha 1-adrenoceptors than prazosin. In the present study we compared the hypotensive potency and efficacy of the two agents, and their effects on pressor responses ...
Chen M F - - 1983
A radiometric microbiologic assay for folate was applied to measure food folacin levels. Sixteen different foods were analyzed. The total folacin content of the 16 foods obtained by the radiometric microbiologic method was found to compare well with that obtained by the turbidimetric microbiologic method. The folacin content ranged from ...
Foster W H - - 1983
No evidence was found for an interaction between dietary crude protein content and the presence or absence of two proprietary food additives used as sources of avoparcin and zinc bacitracin. The food additives had a similar effect in increasing rate of growth resulting in significant improvements of about 2% in ...
Lipton M A - - 1983
Ten years ago, Dr. Feingold proposed that hyperactivity and learning disabilities in children are commonly caused by the ingestion of food additives and claimed that elimination of foods with additives from the diet resulted in major improvements in three-quarters of hyperactive children. In the last five years, controlled double-blind studies ...
Miles R D - - 1983
Two experiments were conducted with turkey poults to determine the interrelationship of choline, sulfate, and methionine. The addition of choline significantly increased growth and the addition of sulfate resulted in numerically improved growth. However, when the two were added in combination a further improvement in growth was obtained, indicating that ...
Maga J A - - 1983
This review provides extensive presentation and evaluation of data relative to flavor potentiation, including the historical, chemical, organoleptic, metabolic, physiological, and consumptive properties of the commonly available flavor potentiators, which are primarily monosodium glutamate and 5'-nucleotides. In addition, their food occurrences, mode of action, manufacturing procedures, and methods of analyses ...
Heidelbaugh N D - - 1982
A series of surveys was conducted among veterinarians engaged in food hygiene, public health, and/or preventive medicine practice. The objective was to identify the circumstances and needs in veterinary food hygiene for the year 2000. Circumstances were defined as the external factors that influence veterinary food hygiene (eg, perspectives, general ...
Green K - - 1983
Rabbit corneal endothelial fluxes of sodium, bicarbonate, inulin, and dextran have been measured in ambient solutions containing either 0.5 mM adenosine alone (A), 0.3 mM glutathione alone (G), both adenosine and glutathione, or neither adenosine nor glutathione. Addition of A alone to a solution lacking both additives caused a decrease ...
Henry-Suchet J - - 1981
Chronic inflammation is a frequent cause of tuboplasty failure. Therefore, it would be useful for one to know the microbiologic agent of infection and to treat it before the tuboplasty. By laparoscopy, a search for Chlamydia trachomatis, Ureaplasma urealyticum, and other microbiologic agents was carried out in the peritoneum and ...
Wilson E - - 1981
Hemoglobin S (Hb S), treated with antisickling agents which interfere with gel formation, has been found to migrate on citrate agar electrophoresis in a manner similar to Hb A or Hb F. This finding suggests a rapid and inexpensive method for screening potential antisickling compounds of the types which interfere ...
Adams M A - - 1980
Cadaveric lumbar intervertebral joints were loaded to simulate the erect standing posture (lordosis), and the erect sitting posture (slightly flexed). The results show that, after the intervertebral disc has been reduced in height by a period of sustained loading, the apophysial joints resist about 16 per cent of the intervertebral ...
< 1 2 3 4 5 6 7 >