Search results

1 – 7 of 7
Article
Publication date: 14 August 2019

Sherazede Bouderbala and Malika Bouchenak

This study aims to investigate the effect of Ajuga iva (Ai) on enzymes involved in the metabolism of cholesterol, in rat fed a cholesterol-enriched diet.

Abstract

Purpose

This study aims to investigate the effect of Ajuga iva (Ai) on enzymes involved in the metabolism of cholesterol, in rat fed a cholesterol-enriched diet.

Design/methodology/approach

Male Wistar rats (n =12), weighing 120 ± 5 g were fed on 1 per cent cholesterol-enriched diet [hypercholesterolemic (HC)] for 15 days (d15). After this adaptation phase, HC rats (total cholesterol = 6.5 ± 0.6 mmol/L) were divided into two groups fed the same diet and treated (Ai-HC) or not with (HC) with Ai for d15.

Findings

At day 15, in Ai-HC group compared to HC, serum triacylglycerol (TG) values were 1.4-fold lower (p =0.002), whereas unesterified cholesterol (UC) contents were 1.8-fold higher (p =0.0001). Serum phospholipids (PL) and cholesteryl esters (CE) contents and liver TG, UC, PL and CE values were not sensitive to Ai. TC/HDL-C and LDL-HDL1-C/HDL-C ratios were, respectively, 1.8- and 4-fold lower (p =0.006 and p =0.04). HDL2-C and HDL3-C amounts were enhanced by 40 and 74 per cent, respectively (p =0.003 and p =0.0001). HDL3-UC was 1.6-fold higher (p =0.006); whereas PL contents were 1.4-fold lower (p =0.003). HDL3-apo and HDL2-CE contents were similar between groups. A decreased of hydroxy-methyl-glutaryl-coenzyme A reductase and cholesterol 7α-hydroxylase activities (−44 and −25 per cent; p =0.003 and p =0.02, respectively) were noted. Lecithin: cholesterol acyltransferase activity was 1.5-fold higher (p =0.001).

Originality/value

In HC rat, Ai is able to induce hypotriglyceridemia. However, it turns out that Ai may reduce cardiovascular risk by decreasing the reports of atherogenicity and modifying the activities of enzymes involved in the cholesterol metabolism.

Details

Nutrition & Food Science , vol. 50 no. 2
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 1 October 1930

Our attention has been called to a question raised in a contemporary as to the disposal of the flesh of bovines which have been compulsorily slaughtered as the result of having…

Abstract

Our attention has been called to a question raised in a contemporary as to the disposal of the flesh of bovines which have been compulsorily slaughtered as the result of having obviously contracted tuberculosis. We say “compulsory” as the slaughter is carried out by order of the Ministry of Agriculture and “obvious” as tuberculous infection is in many cases not readily detectable. It should be pointed out that the flesh of an infected bovine may be used for food according to the degree and nature of the infection, but the use of the flesh for such a purpose is only permissible at the discretion of the official veterinary expert acting on behalf of the Ministry in the interests of public health. Admittedly the regulations as at present laid down and under which the Ministry of Agriculture act are by no means ideal, and we have no doubt that the officials of the Ministry would be the last persons to say that they were. Like all such regulations, they are of the nature of a compromise, by which statement we do not mean that the monetary interests of the trades in milk and beef are placed before those of public health. Far from it. The ideal condition aimed at is of course to have all milk and all beef free from the slightest taint and risk of tubercular infection. It is, however, no use to disguise the fact that the attainment of such an ideal is and of necessity must be a long way from accomplishment. It is only within this century that bovine tuberculosis has received serious attention in this country, and bovine tuberculosis is an evil legacy from a long past. It is no doubt in part at least attributable to long continued bad housing and feeding that went on unchecked from year to year. It is well known that in the neighbourhood of large towns where open pasture was not readily attainable cows were sometimes kept in what were little better than cellars, from which they seldom emerged. A cow was looked upon as a sort of machine for yielding milk, and no regard was paid to the way in which the machine was run so long as it delivered the goods, no matter of what quality the goods might be. The conditions for the development of tuberculosis were thus almost as good as if they had been deliberately devised for that very purpose, with results that we have now every reason to deplore. It is only twenty years since Prof. MacFadyean stated that 20 per cent. of the adult cattle in the country were tuberculous, and on the authority of the veterinary surgeon to the King at the same time 36 out of a herd of 40 cows that had belonged to Queen Victoria were tuberculous. If these were the conditions but twenty years ago throughout the country, and if nine out of every ten animals which were kept under the best conditions and received every care were tuberculous, the difficulty and extraordinary complexity of the problem confronting the Ministries concerned at the present day in their attempts to check the evil may be perhaps imagined. Checked it may be but eradication is not in sight. For if the drastic expedient were resorted to of slaughtering every tuberculous bovine in the country the result would be a milk famine. Prices would rise so that for the poor milk would be unobtainable. Many in the trade would be ruined, and perhaps the supply of milk would have to be obtained by importations of milk from abroad produced under conditions over which we could exercise no control. This hypothetical aspect of affairs, however, need not be further discussed.—The administration of the Tuberculosis Order, 1925 (Diseases of Animals Acts, 1894 to 1925), by the Ministry of Agriculture is therefore one of great difficulty. The “waste of years” cannot be “refunded in a day.” The matter calls for constant expert veterinary supervision.—Under Section 3 (1) of the Order the disease is notifiable to the Local Authority. Veterinary inspection follows, and if the animal is found to be suffering from tuberculosis of the udder, tuberculous emaciation, or a chronic cough or yielding tuberculous milk the Local Authority shall order the animal to be slaughtered, though if the owner objects to this the special authority of the Minister has to be obtained. It does not follow that the flesh of a tuberculous animal is unfit to be used as human food. Under 5A.1 of the Order if it is intended to use the flesh for this purpose the Local Authority must notify the Sanitary Authority of the time and place of slaughter. After this neither the carcase nor any part of it may be removed from the slaughter house unless by leave of the Medical Officer of Health or by other competent officer of the Authority.—Removal before such leave is an offence under the Act.—It may be observed here that no animal whose value is stated to be over fifty pounds may be slaughtered under the Order except by Ministerial sanction.—Compensation is payable to the owner of an animal, which has been slaughtered under the Order, by the Local Authority. All this is clear and fair, but as illustrating one of the difficulties of administering the Order, it may be pointed out that these perfectly fair and reasonable regulations made in the interests of public health were found to be indirectly in conflict with public ignorance and prejudice. In this way. In certain industrial districts in the country lean meat was demanded by some of the working class families. The reason being that more nourishment could be got out of lean than out of fat. There is something to be said for this. But where did the lean meat come from? An emaciated beast without a bit of fat on it might well be suffering from tuberculosis. It would pay an unscrupulous owner of such a beast very much better to sell it direct to a dealer in such meat—no information being given and no questions being asked—rather than go to the trouble of observing the Act and receiving a possibly smaller amount of money which would have been paid him under the Order. Thus quite a flourishing trade in such diseased meat was in fair way to grow up, and until the evil was traced to its source and the original owner prosecuted for non‐notification it could not be stopped. Again, the owner of an animal that has been slaughtered under the Order is entitled to recover its full market value and twenty shillings over if it is found that no tubercle exists; if tuberculosis, but not of an advanced state is found, then three‐fourths of the market value or forty‐five shillings, whichever sum is the greater less one‐half the costs of valuation; if advanced tuberculosis is present then one‐fourth the market value or the sum of forty‐five shillings as before under Section 9 i., ii., and iii. of the Order. The result of this was that certain people established a somewhat paying business in buying obviously tuberculous cows from a cowkeeper for a mere song, the cowkeeper being quite willing to get rid of them in this way and thus save himself trouble and the small amount of publicity he would have incurred had he observed the terms of the Order. The buyer would then notify the authority that he had a tuberculous cow and obtain compensation which yielded him a profit. The report for 1928 shows that nearly 17,000 animals were slaughtered under the Order during the year, and nearly 200 were in such a condition that they died before they could be slaughtered! It may also be observed that the powers conferred by Act of Parliament on the responsible Ministries were not readily obtained. Trade interests were alleged, and effective legislation had to be built up in the face of this. Tuberculosis is unhappily somewhat firmly established in our herds of cattle and it will still require long and patient work, expert knowledge and, as it will have been seen, the methods of police detectives before the menace is removed, if it ever can be.

Details

British Food Journal, vol. 32 no. 10
Type: Research Article
ISSN: 0007-070X

Article
Publication date: 1 April 1934

14. Peppermint extract is the flavouring extract prepared from oil of peppermint, or from peppermint, or both, and contains not less than 3 per cent. by volume by oil of…

Abstract

14. Peppermint extract is the flavouring extract prepared from oil of peppermint, or from peppermint, or both, and contains not less than 3 per cent. by volume by oil of peppermint.

Details

British Food Journal, vol. 36 no. 4
Type: Research Article
ISSN: 0007-070X

Article
Publication date: 1 August 1938

The following definitions and standards for food products have been adopted as a guide for the officials of this Department in enforcing the Food and Drugs Act. These are…

Abstract

The following definitions and standards for food products have been adopted as a guide for the officials of this Department in enforcing the Food and Drugs Act. These are standards of identity and are not to be confused with standards of quality or grade; they are so framed as to exclude substances not mentioned in the definition and in each instance imply that the product is clean and sound. These definitions and standards include those published in S. R. A., F. D. 2, revision 4, and those adopted October 28, 1936.

Details

British Food Journal, vol. 40 no. 8
Type: Research Article
ISSN: 0007-070X

Article
Publication date: 1 June 2021

Bazila Naseer, Haroon Rashid Naik, Syed Zameer Hussain, Tashooq Bhat and Abdul Rouf

Low glycemic index gluten-free cookies from high amylose rice flour were prepared by modifying baking conditions and ingredient composition.

Abstract

Purpose

Low glycemic index gluten-free cookies from high amylose rice flour were prepared by modifying baking conditions and ingredient composition.

Design/methodology/approach

Baking temperature, baking time, and concentration of carboxymethyl cellulose (CMC) were varied between 170 and 190° C, 12–25 min, and 0.2–1%, respectively, using central composite rotatable design. The developed cookies were packed in metalized polyester pouches and stored under ambient conditions for a period of 90 days.

Findings

Width and bulk density of cookies increased significantly (p < 0.05) with an increase in baking temperature, while thickness, baking loss and yield decreased with an increase in baking temperature. Puffiness increased predominantly with the increase in the concentration of CMC. Design expert predicted baking temperature of 185° C, baking time of 22 min, and 0.8% concentration of CMC as desirable conditions for the development of gluten-free cookies from rice flour. Cookies developed after following optimized conditions recorded dietary fiber of 4.66%, resistant starch (RS) content of 7.20% and predicted glycemic index (pGI) of 44.60. RS, pGI, moisture, water activity, free fatty acids and peroxide value increased significantly, whereas hardness and overall acceptability decreased during storage.

RPractical implications

Gluten-free (GF) foods are in high demand globally due to the prevalence of celiac disease. Rice lacks gluten protein, and thus, can serve as a potential raw material for the development of GF cookies. In the present study, the ingredient modification and freezing interventions during baking were found to be crucial if the development of low GI gluten-free cookies having good RS content is targeted. Optimized GF cookies prepared via technological intervention and packed in metalized polyester were shelf stable for up to 3 months under ambient conditions. Furthermore, resistant starch content was enhanced while the predicted glycemic index was decreased during storage. Adoption of baking conditions and CMC level optimized in the present study can help to develop shelf-stable GF bakery products for people suffering from comorbidities like celiac disease and diabetes.

Originality/value

Resistant starch content was enhanced while predicted glycemic index was decreased during storage of gluten-free cookies prepared from high amylose rice flour. The developed cookies can be a complementary diet to people suffering from comorbidities like celiac disease and diabetes.

Details

British Food Journal, vol. 123 no. 12
Type: Research Article
ISSN: 0007-070X

Keywords

Open Access
Article
Publication date: 28 February 2023

Boshra Ahmed Halo, Rashid Al-Yahyai, Abdullah Al-Sadi and Asma Al-Sibani

Crops are increasingly affected by drought; hence, the current study explored the potential role of three desert endophytic fungi, Aspergillus fumigatus, Aspergillus terreus and…

Abstract

Purpose

Crops are increasingly affected by drought; hence, the current study explored the potential role of three desert endophytic fungi, Aspergillus fumigatus, Aspergillus terreus and Talaromyces variabilis, in conferring drought tolerance in tomato plants.

Design/methodology/approach

Preserved endophytic fungi from a Rhazya stricta desert plant were adopted to obtain the required fungal treatment; tomatoes received fungal treatments directly in plastic trays and subsequently in pots. Drought was applied using 15% of PEG-6000 at two stages: flowering and fruiting. The following parameters were measured: pollen sterility, growth characteristics, morphological analysis and biochemical analysis, including proline, gibberellic acid (GA3) and chlorophyll measurements; thus, the data were analyzed statistically using SPSS software.

Findings

All applied endophytes significantly promoted pollen viability and tomato yield under stressed and nonstressed conditions. Interestingly, these endophytes significantly enhanced the number of trichomes under drought stress and promoted tomato fruit quality. The colonized tomato plants accumulated a high proline level under drought stress but lower than un-inoculated stressed plants. Also, a significant rise in growth characteristics was observed by A. fumigatus and A. terreus under normal conditions. Moreover, both raised GA3 levels under drought-stressed and nonstressed conditions. Also these two endophytes enhanced chlorophyll and carotenoid contents under drought stress. Fruit characteristics were enhanced by nonstressed T. variabilis and stressed A. fumigatus.

Originality/value

The present endophytic fungi provide impressive benefits to their host in normal and drought-stressed conditions. Consequently, they represent valuable sources as sustainable and environmentally friendly alternatives to mitigate drought stress.

Details

Arab Gulf Journal of Scientific Research, vol. 41 no. 4
Type: Research Article
ISSN: 1985-9899

Keywords

Article
Publication date: 5 April 2023

Mozhgan Hosseinnezhad and Zahra Ranjbar

The purpose of this paper is to introduce flexible dye-sensitized solar cells (FDSSCs).

Abstract

Purpose

The purpose of this paper is to introduce flexible dye-sensitized solar cells (FDSSCs).

Design/methodology/approach

In the third generation solar cells, glass was used as a substrate, which due to its high weight and fragility, was not possible to produce continuously. However, in flexible solar cells, flexible substrates are used as new technology. The most important thing may choose a suitable substrate to produce a photovoltaic (PV) device with optimal efficiency.

Findings

Conductive plastics or metallic foils are the two main candidates for glass replacement, each with its advantages and disadvantages. As some high-temperature methods are used to prepare solar cells, metal substrates can be used to prepare PV devices without any problems. In contrast to the advantage of high thermal resistance in metals, metal substrates are dark and do not transmit enough light. In other words, metal substrates have a high loss of photon energy. Like all technologies, PV devices with polymer substrates have technical disadvantages.

Practical implications

In this study, the development of FDSSCs offers improved photovoltaic properties.

Social implications

The most important challenge is the poor thermal stability of polymers compared to glass and metal, which requires special methods to prepare polymer solar cells. The second important point is choosing the suitable components and materials for this purpose.

Originality/value

Dependence of efficiency and performance of the device on the angle of sunlight, high-cost preparation devices components, limitations of functional materials such as organic-mineral sensitizers, lack of close connection between practical achievements and theoretical results and complicated fabrication process and high weight.

Details

Pigment & Resin Technology, vol. 52 no. 3
Type: Research Article
ISSN: 0369-9420

Keywords

1 – 7 of 7