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Application of the numerical method to the art of Medicine was regarded not as a “trivial ingenuity” but “an important stage in its development”; thus proclaimed Professor Bradford Hill, accepted as the father of medical statistics, a study still largely unintelligible to the mass of medical practitioners. The need for Statistics is the elucidation of the effects of multiple causes; this represents the essence of the statistical method and is most commendable. Conclusions reached empirically under statistical scrutiny have mistakes and fallacies exposed. Numerical methods of analysis, the mathematical approach, reveals data relating to factors in an investigation, which might be missed in empirical observation, and by means of a figure states their significance in the whole. A simplified example is the numerical analysis of food poisoning, which alone determines the commonest causative organisms, the commonest food vehicles and the organisms which affect different foods, as well as changes in the pattern, e.g., the rising incidence of S. agona and the increase of turkey (and the occasions on which it is served, such as Christmas parties), as a food poisoning vehicle. The information data enables preventive measures to be taken. The ever‐widening fields of Medicine literally teem with such situations, where complexities are unravelled and the true significance of the many factors are established. Almost every sphere of human activity can be similarly measured. Apart from errors of sampling, problems seem fewer and controversy less with technical methods of analysis then on the presentation and interpretation of figures, or as Bradford Hill states “on the application of common sense and on elementary rules of logic”.

The Food Hygiene (General) Regulations, 1970, when they first appeared, seem to have attracted more notice in the daily press than in the specialist journals, although, while re‐enacting much that was in the 1960 regulations, which they repeal, the new measures break new and important ground, as well as introducing a number of amending provisions, which experience has shown were needed. We tend to associate hygiene needs of food and drink with the thronging streets of the city and town, the hidden backrooms of restaurants, the bustling market and the mobile food van, which, in this motorized age, has ousted the bawling backstreet hucksterer.

That ice‐creams prepared with dirty materials and under dirty conditions will themselves be dirty is a proposition which, to the merely ordinary mind, appears to be sufficiently obvious without the institution of a series of elaborate and highly “scientific” experiments to attempt to prove it. But, to the mind of the bacteriological medicine‐man, it is by microbic culture alone that anything that is dirty can be scientifically proved to be so. Not long ago, it having been observed that the itinerant vendor of ice‐creams was in the habit of rinsing his glasses, and, some say, of washing himself—although this is doubtful—in a pail of water attached to his barrow, samples of the liquor contained by such pails were duly obtained, and were solemnly submitted to a well‐known bacteriologist for bacteriological examination. After the interval necessary for the carrying out of the bacterial rites required, the eminent expert's report was published, and it may be admitted that after a cautious study of the same the conclusion seems justifiable that the pail waters were dirty, although it may well be doubted that an allegation to this effect, based on the report, would have stood the test of cross‐examination. It is true that our old and valued friend the Bacillus coli communis was reported as present, but his reputation as an awful example and as a producer of evil has been so much damaged that no one but a dangerous bacteriologist would think of hanging a dog—or even an ice‐cream vendor—on the evidence afforded by his presence. A further illustration of bacteriological trop de zèle is afforded by the recent prosecutions of some vendors of ice‐cream, whose commodities were reported to contain “millions of microbes,” including, of course, the in‐evitable and ubiquitous Bacillus coli very “communis.” To institute a prosecution under the Sale of Food and Drugs Act upon the evidence yielded by a bacteriological examination of ice‐cream is a proceeding which is foredoomed, and rightly foredoomed, to failure. The only conceivable ground upon which such a prosecution could be undertaken is the allegation that the “millions of microbes ” make the ice‐cream injurious to health. Inas‐much as not one of these millions can be proved beyond the possibility of doubt to be injurious, in the present state of knowledge; and as millions of microbes exist in everything everywhere, the breakdown of such a case must be a foregone conclusion. Moreover, a glance at the Act will show that, under existing circumstances at any rate, samples cannot be submitted to public analysts for bacteriological examination—with which, in fact, the Act has nothing to do—even if such examinations yielded results upon which it would be possible to found action. In order to prevent the sale of foul and unwholesome or actual disease‐creating ice‐cream, the proper course is to control the premises where such articles are prepared; while, at the same time, the sale of such materials should also be checked by the methods employed under the Public Health Act in dealing with decomposed and polluted articles of food. In this, no doubt, the aid of the public analyst may sometimes be sought as one of the scientific advisers of the authority taking action, but not officially in his capacity as public analyst under the Adulteration Act. And in those cases in which such advice is sought it may be hoped that it will be based, as indeed it can be based, upon something more practical, tangible and certain than the nebulous results of a bacteriological test.

In addition to agriculture, energy production, and industries, potable water plays a significant role in many fields, further increasing the demand for potable water. Purification and desalination play a major role in meeting the need for clean drinking water. Clean water is necessary in different areas, such as agriculture, industry, food industries, energy generation and in everyday chores.

The authors have used the different search engines like Google Scholar, Web of Science, Scopus and PubMed to find the relevant articles and prepared this mini review.

The various stages of water purification include coagulation and flocculation, coagulation, sedimentation and disinfection, which have been discussed in this mini review. Using nanotechnology in wastewater purification plants can minimize the cost of wastewater treatment plants by combining several conventional procedures into a single package.

In society, we need to avail clean water to meet our everyday, industrial and agricultural needs. Purification of grey water can meet the clean water scarcity and make the environment sustainable.

This mini review will encourage the researchers to find out ways in water remediation to meet the need of pure water in our planet and maintain sustainability.

Since the widespread finding by public analysts of penicillin in milk as the result of the treatment of bovine mastitis, it could only be a matter of time before there were prosecutions under Sect. 2, Food and Drugs Act, 1955. In this issue we report a successful case at Leeds, in which the defendant was convicted and fined. In our July issue (p. 98) we also reported a case brought by the Milk Marketing Board, where the defendant was given an absolute discharge, but although this was the first reported case in England and Wales, the complaint was laid earlier at Leeds, so the distinction of being the first food and drugs authority in the country to test the decision of whether or not penicillin traces in milk constitutes an offence rests with Leeds. The amount present—0.06 I.U. per ml.—was much lower than analysts have often reported, but on medical grounds, the possibility of hypersensitivity reactions and the development of antibiotic‐resistant types of organisms, comparison of amounts present in samples is a refinement not particularly relevant. Another important point about the prosecution at Leeds is that the authority was prepared to prove toxicity and to fight the case on these grounds, with expert witnesses lined up for the purpose. A plea of not guilty obviated the necessity of this. The defence naively suggested that the choice was either penicillin traces or the pathological products of mastitis in the milk, but in truth, it is neither. A purchaser expects genuine milk, pure and of the quality demanded

Food—national dietary standards—is a sensitive index of socio‐economic conditions generally; there are others, reflecting different aspects, but none more sensitive. A country that eats well has healthy, robust people; the housewife who cooks hearty, nourishing meals has a lusty, virile family. It is not surprising, therefore, that all governments of the world have a food policy, ranking high in its priorities and are usually prepared to sacrifice other national policies to preserve it. Before the last war, when food was much less of an instrument of government policy than now—there were not the shortages or the price vagaries—in France, any government, whatever its colour, which could not keep down the price of food so that the poor man ate his fill, never survived long; it was—to make use of the call sign of those untidy, shambling columns from our streets which seem to monopolize the television news screens—“out!” Lovers of the Old France would say that the country had been without stable government since 1870, but the explanation for the many changes in power in France in those pre‐war days could be expressed in one word—food!

This paper aims to update with information about edible coating on minimally processed and fresh fruits, focussing on the composition, active ingredients, antimicrobial concentration and their effect on ripening rate, phytonutrients retention and shelf-life of fruits. In future, the data will be helpful for the processors to select the best coating material and its effective concentration for different fresh and minimally processed fruits.

Major scientific information was collected from Scopus, Web of Science, Mendeley and Google Scholar. Several key words such as postharvest, edible coating, phytonutrients, shelf-life enhancement, bioactive compounds, minimally processed fruits and antimicrobial compounds were used to find the data. Relevant information was collected by using 90 recent research and review articles.

The main findings of this comprehensive review are to improve the quality of fruits, to meet the next-generation food security needs. However, in the process of achieving the goal of improving quality of food produce, embrace of synthetic, non-biodegradable packaging materials have increased, creating serious pollution problem. Amidst several alternatives for replacement of synthetic packaging, the option of biodegradable films and coatings showed promising results.

The paper represents recent information about the edible coating used for the enhancement of shelf-life of fresh and minimally processed fruits.