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Article
Publication date: 1 October 1940

Numerous problems have arisen in the application of freezing methods to the various types of food products. One problem is concerned with the determination of the direct effects…

Abstract

Numerous problems have arisen in the application of freezing methods to the various types of food products. One problem is concerned with the determination of the direct effects of low temperatures upon the food itself and another problem is to determine the effects of low temperatures upon other factors which may in turn affect the quality of the food. We are especially interested in knowing the exact effects of freezing and other low temperatures upon the micro‐organisms associated with foods. Bacteria constitute the most significant group of micro‐organisms affecting the sanitation and keeping qualities of foods. Those bringing about the decomposition of food products, while they are many and vary greatly, depending upon the nature of the food, are chiefly organisms from the air, water and soil. The types of bacteria found in foods vary greatly in their action on the food and also in reaction or response to varying temperature conditions. The action of micro‐organisms on foods of high carbohydrate content results in fermentations, while the action of the micro‐organisms on foods of high protein content will result, chiefly, in putrefactive changes. The former type of change usually occurs at a more rapid rate, when conditions are favourable, but the latter change usually results in a more undesirable condition of the food. While certain types of bacteria grow best at temperatures well above human body temperatures and others even as low as the freezing point of water, a large majority of those found in foods and the ones normally responsible for the detrimental changes in foods, are active only between 50° and 100° F. It is this latter group which is most implicated in food spoilage and it is significant that this group will be most effectively suppressed by low temperatures. Bacteria are much less affected by low than by high temperatures. Cold alone does not kill most types of bacteria, but slows down their activities to such an extent that they multiply very slowly, if at all. Many bacteria will die off, however, when held at a temperature below that which permits growth and reproduction. Bacteria, generally speaking, will be more easily killed when frozen in pure water than when frozen in foods containing albuminous matter and fats. There are a few bacteria of the cold‐loving type, which may actually multiply and cause slow decomposition at temperatures of 0° C. or less, if substances in solution are present to depress the crystallising point of water. Cold not only retards the growth of bacteria by the direct physiological effect of slowing down the rate of metabolism, but also depresses bacterial activity through its effect on their water and food supplies. Bacteria cannot grow and multiply in a completely frozen or crystallised medium, since they are by nature aquatic and are unable to carry on their normal activities except in a liquid medium. There is no evidence that bacteria maintain a body temperature which would make water available from a completely frozen medium. Bacteria may only utilise food when it is in soluble form, and thus capable of diffusion through their semipermeable cell membranes. When the temperature is sufficiently low to cause the crystallisation of most of the water, the remaining constituents become relatively more concentrated and this will further suppress the activity of the bacterial cells by affecting their osmotic pressures. These effects are very similar to those of partial desiccation or drying. In the course of experimentation some very striking examples of bacterial resistance to low temperatures have been reported. Lactobacillus and aerobacter have been reported to survive in peas stored at −10° C. for two years; whilst bacteria of the genus Pseudomonas were reported to increase in numbers when stored at −4° C. In general it may be said that practically all pathogenic bacteria likely to be found in foods will die off rather rapidly at low temperatures. However, this should not be interpreted to mean that infected foods can be made safe by low temperatures alone. Among the disease producing bacteria transmitted through foods, those of special significance include the organisms and toxins of botulism, typhoid fever, the several organisms of food poisoning called ptomaine poisoning, belonging to the Salmonella group (Salmonella enteritidis, etc.), and various organisms causing infections of the general nature of dysenteries or summer complaints of infants and adults. Frozen foods present no greater threat of botulism than foods preserved by other methods, yet it has been shown that Clostridium botulinum spores may survive freezing at −16° C. for as long as 14 months. The vegetables when thawed become toxic in from three to six days. Experiments have shown that Clostridium botulinum in foods preserved by “quick freezing” and subsequent storage at temperatures below 10° C., show no toxin production for at least 30 days. The lower the temperature of storage the greater the protection against botulism. All foods in which Clostridium botulinum might be present, and which have not been thoroughly heated, should be refrigerated at or near the freezing point. All foods which may harbour the botulism organisms or toxins should be selected with special care, before they are frozen, and care should be taken to see that they are kept frozen until used by the customer. Frozen vegetables should be used immediately after thawing. Thawing and refreezing is always objectionable since such a practice leads to loss of quality, and since bacterial growth and activity may occur during the period of thawing. While the typhoid organisms (Eberthella typhosa) shows considerable variation in resistance to low temperatures, it has been shown that about 99 per cent. will be killed immediately by freezing. Temperatures below freezing apparently have little more effect than the freezing point temperature. Small numbers of the Salmonella and similar organisms of the food poisoning groups may survive in frozen foods for periods of several weeks. It has been shown, however, that no significant growth of activity of these organisms will occur if the foods are refrigerated at 5° C. (41° F.) or less. Moulds and yeasts are of relatively little importance in frozen foods, both from the standpoint of sanitation and food spoilage. While low temperatures will materially retard the rate of enzymatic changes within food products, there is evidence that such changes continue to take place in frozen foods, even considerably below the freezing point. These changes probably account, in part, for the fact that frozen foods once thawed, will decompose more rapidly than foods which have not been frozen.

Details

British Food Journal, vol. 42 no. 10
Type: Research Article
ISSN: 0007-070X

Abstract

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New Library World, vol. 101 no. 6
Type: Research Article
ISSN: 0307-4803

Keywords

Content available
Book part
Publication date: 29 May 2020

Femi Oladele and Timothy G. Oyewole

Abstract

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Social Media, Mobile and Cloud Technology Use in Accounting: Value-Analyses in Developing Economies
Type: Book
ISBN: 978-1-83982-161-5

Article
Publication date: 1 January 1951

WE all scan the advertisements for librarians in The Times Literary Supplement and other journals every week, and we might be forgiven for inferring from them that there is a…

Abstract

WE all scan the advertisements for librarians in The Times Literary Supplement and other journals every week, and we might be forgiven for inferring from them that there is a dearth of those who, by a curious inversion, are asked for as “A.L.A's or F.L.A's.” In contradiction, it would appear that about 1,500 youngsters are trying to enter the profession by way of the Entrance Examination every year. Youngsters beginning life, especially girls, do usually prefer or are constrained by their parents, the cost of living, and the scarcity of lodgings, to start in their home towns and still to live at home.. Higher in the scale the whole position is tangled in various ways. Many of the entrants fall by the way; commercial pay exceeds municipal and other library pay; more find the work uncongenial, as library work certainly is except to those who are book‐lovers, have a strong social sense, and, in the best cases, a flair for publicity and business administration. Others marry and leave, although some stay on with the ring on the third finger of their left hand. Thus, when maturity is reached, only a relatively few, even amongst the mature, have become chartered librarians and, fewer still, Fellows—as is natural seeing that the fellowship is a much more severe test nowadays and only much love and industry can achieve it. This position is even worse in some other branches of the municipal service; our salaries do not draw the best of the young folk permanently and many a Treasurer's office, to take one branch only, is complaining of want of good recruits. Those of our good ones who do remain do so because of the work and not the pay. Authority has always known this, from the day when Gladstone opined that working in the British Museum was so delightful that it was incredible that the workers wanted any pay at all. Chief librarians today have been most unfairly neglected by the salary negotiating bodies who have dealt generously with several other kinds of chief officers in the local services.

Details

New Library World, vol. 53 no. 13
Type: Research Article
ISSN: 0307-4803

Article
Publication date: 1 March 1974

Tom Schultheiss, Lorraine Hartline, Jean Mandeberg, Pam Petrich and Sue Stern

The following classified, annotated list of titles is intended to provide reference librarians with a current checklist of new reference books, and is designed to supplement the…

Abstract

The following classified, annotated list of titles is intended to provide reference librarians with a current checklist of new reference books, and is designed to supplement the RSR review column, “Recent Reference Books,” by Frances Neel Cheney. “Reference Books in Print” includes all additional books received prior to the inclusion deadline established for this issue. Appearance in this column does not preclude a later review in RSR. Publishers are urged to send a copy of all new reference books directly to RSR as soon as published, for immediate listing in “Reference Books in Print.” Reference books with imprints older than two years will not be included (with the exception of current reprints or older books newly acquired for distribution by another publisher). The column shall also occasionally include library science or other library related publications of other than a reference character.

Details

Reference Services Review, vol. 2 no. 3
Type: Research Article
ISSN: 0090-7324

Article
Publication date: 1 January 1978

In the Court of Appeal last summer, when Van Den Berghs and Jurgens Limited (belonging to the Unilever giant organization) sought a reversal of the decision of the trial judge…

184

Abstract

In the Court of Appeal last summer, when Van Den Berghs and Jurgens Limited (belonging to the Unilever giant organization) sought a reversal of the decision of the trial judge that their television advertisements of Stork margarine did not contravene Reg. 9, Margarine Regulations, 1967—an action which their Lordships described as fierce but friendly—there were some piercing criticisms by the Court on the phrasing of the Regulations, which was described as “ridiculous”, “illogical” and as “absurdities”. They also remarked upon the fact that from 1971 to 1975, after the Regulations became operative, and seven years from the date they were made, no complaint from enforcement authorities and officers or the organizations normally consulted during the making of such regulations were made, until the Butter Information Council, protecting the interests of the dairy trade and dairy producers, suggested the long‐standing advertisements of Reg. 9. An example of how the interests of descriptions and uses of the word “butter” infringements of Reg. 9. An example af how the interests of enforcement, consumer protection, &c, are not identical with trade interests, who see in legislation, accepted by the first, as injuring sections of the trade. (There is no evidence that the Butter Information Council was one of the organizations consulted by the MAFF before making the Regulations.) The Independant Broadcasting Authority on receiving the Council's complaint and obtaining legal advice, banned plaintiffs' advertisements and suggested they seek a declaration that the said advertisements did not infringe the Regulations. This they did and were refused such a declaration by the trial judge in the Chancery Division, whereupon they went to the Court of Appeal, and it was here, in the course of a very thorough and searching examination of the question and, in particular, the Margarine Regulations, that His Appellate Lordship made use of the critical phrases we have quoted.

Details

British Food Journal, vol. 80 no. 1
Type: Research Article
ISSN: 0007-070X

Article
Publication date: 1 October 1935

OF old the public library was wont to take its reputation from the character of the newsroom. That room, as everyone knows, attracts every element in the community and it may be…

Abstract

OF old the public library was wont to take its reputation from the character of the newsroom. That room, as everyone knows, attracts every element in the community and it may be it attracts especially the poorer elements;—even at times undesirable ones. These people in some towns, but perhaps not so often now‐a‐days, have been unwashen and often not very attractive in appearance. It was natural, things being as they are, that the room should give a certain tone to the institution, and indeed on occasion cause it to be avoided by those who thought themselves to be superior. The whole level of living has altered, and we think has been raised, since the War. There is poverty and depression in parts of the country, it is true; but there are relief measures now which did not exist before the War. Only those who remember the grinding poverty of the unemployed in the days, especially the winter days, before the War can realise what poverty really means at its worst. This democratic levelling up applies, of course, to the public library as much as to any institution. At present it may be said that the part of the library which is most apparent to the public and by which it is usually judged, is the lending or home‐reading department. It therefore needs no apology if from time to time we give special attention to this department. Even in the great cities, which have always concentrated their chief attention upon their reference library, to‐day there is an attempt to supply a lending library service of adequate character. We recall, for example, that the Leeds Public Library of old was first and foremost a reference library, with a lending library attached; to‐day the lending library is one of the busiest in the kingdom. A similar judgment can be passed upon Sheffield, where quite deliberately the city librarian would restrict the reference library to works that are of real reference character, and would develop more fully the lending library. In Manchester, too, the new “Reference Library”—properly the new Central Library—has a lending library which issues about 1,500 volumes daily. There must be all over the country many libraries issuing up to a thousand volumes each a day from their central lending departments. This being the case the department comes in for very careful scrutiny.

Details

New Library World, vol. 38 no. 4
Type: Research Article
ISSN: 0307-4803

Content available
Book part
Publication date: 11 May 2022

Jacqui Horsburgh

Abstract

Details

Improving Outcomes for Looked after Children
Type: Book
ISBN: 978-1-80071-078-8

Article
Publication date: 4 May 2012

Julie Hodges

The purpose of this paper is to explore the transition of midlife women from employment in organizations to self‐employment. It examines how midlife women account for their…

1571

Abstract

Purpose

The purpose of this paper is to explore the transition of midlife women from employment in organizations to self‐employment. It examines how midlife women account for their transition from organizations to self‐employment; why they opted for self‐employment rather than simply changing organizations and their experience of self‐employment.

Design/methodology/approach

This paper is based on semi‐structured interviews (n=100), with women between the ages of 46 and 60 who have moved into self‐employment from organizational employment.

Findings

Two themes emerged from the study. The first was the negative organizational experience of some of the women which had caused dissatisfaction and disenchantment and therefore self‐employment was seen as the only next step. The second theme was changes triggered by a positive proactive choice to move into self‐employment.

Research limitations/implications

There are limitations to using individual perceptions and anecdotes. It cannot be assumed that the women in this study represent the views of all midlife women.

Practical implications

Silence about midlife women leaving organizations perpetuates high costs for both the organization and the individual involved. Organizations need to address the negative and discriminatory perceptions about midlife women and recognize the trend towards more, not fewer, older women in the workplace and value the experience, skills and knowledge they bring.

Originality/value

The paper is original in that the focus is on women in midlife, which is unique, as previous research about women in organizations has rarely encompassed the experiences of this group of women moving into self‐employment.

Details

Gender in Management: An International Journal, vol. 27 no. 3
Type: Research Article
ISSN: 1754-2413

Keywords

Book part
Publication date: 8 August 2017

Lorenzo Fusaro

This paper attempts to critically question present IPE approaches and analyses that aim at assessing China’s role within the international political economy. Thus, unlike common…

Abstract

This paper attempts to critically question present IPE approaches and analyses that aim at assessing China’s role within the international political economy. Thus, unlike common theorizations that see the country as being integrated within US hegemony (Panitch and Gindin) or those accounts that claim that we are already witnessing the “terminal crisis” of US hegemony accompanied by a hegemonic transition toward China (Arrighi), the paper will argue that China was able to gain “relative geopolitical autonomy” as a result of the revolutionary processes it went through and eventually assert itself as a contender state, now just in the process of challenging US hegemony. Dissatisfied with existent theorizations of hegemony, I will be drawing on the critical edition of Gramsci’s Quaderni and attempt to offer a new perspective regarding the conceptualization thereof. Thus applying the elaborated framework of analysis to the current situation, I argue that unlike the US’s ability to counter the challenge of its traditional imperial rivals Germany and Japan as they developed under the grip of US hegemony, the country is facing difficulties in countering China’s ascent. However, while maintaining that China does indeed represent a challenge to US hegemony, particularly in East Asia, I will argue that the idea of a “crisis of US hegemony” is premature as China remains distant from fully realizing hegemonic relations, even at the regional level.

Details

Return of Marxian Macro-Dynamics in East Asia
Type: Book
ISBN: 978-1-78714-477-4

Keywords

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