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The study

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Sep 30, 2010 | From the print edition

CSE’s Pollution Monitoring Laboratory tested 12 branded honey samples for 6 antibiotics. These antibiotics are reportedly used for disease control and as growth promoters in commercial honey production

imageOXYTETRACYCLINE

Belonging to the common antibiotic class of Tetracyclines, this antibiotic is used by beekeepers against bacterial foul brood diseases. The BIS recommends it for the treatment of European foul brood disease.

HEALTH IMPACTS: Chronic exposure to oxytetracycline or OTC can lead to bloodrelated disorders, liver injury and delayed blood coagulation. It can damage calciumrich organs such as teeth and bones and may cause nasal cavities to erode. Children under seven years of age may develop a discoloration of the teeth; infants of mothers treated with OTC during pregnancy are prone to a similar discoloration. Some other chronic effects of OTC include increased sensitivity to the sun, wheezing and asthmatic attacks. Tetracyclines are not advised for use in treating pregnant or lactating women and children under 12, except in certain conditions.

CHLORAMPHENICOL

It is a broad-spectrum antibiotic. It has been banned from use in food-producing animals, in many countries.

HEALTH IMPACTS:  Studies on humans indicate that chloramphenicol could be a potential carcinogen and genotoxin. Repeated or prolonged exposure can lead to organ damage, bone marrow toxicity etc, while longterm exposure can cause aplastic anaemia, a condition where the bone marrow does not produce sufficient new cells to replenish blood cells. Aplastic anaemia is idiosyncratic (rare, unpredictable, and unrelated to dose), generally fatal and could be triggered by even small residues of chloramphenicol.

Several reports document human fatalities resulting from ophthalmic preparations containing minuscule doses of chloramphenicol. Increased exposure to chloramphenicol could mean an increased risk of childhood leukaemia as well.

AMPICILLIN

A Beta-lactam antibiotic, it is widely used in veterinary medicine for treatment and prevention of bacterial diseases. However, it is not recommended for use on honeybees.

HEALTH IMPACTS:

Repeated exposure may cause allergic reactions, asthmatic attacks and other disorders.

ERYTHROMYCIN It is a Macrolide-class antibiotic used for poultry, and is now reportedly being used to protect honeybees from bacterial diseases.

HEALTH IMPACTS: With chronic exposure, erythromycin can turn into a terratogen—a reproductive hazard. Cardiac malformation has been observed in infants of women who had taken this antibiotic in their early pregnancy. Exposure to erythromycin (especially long courses at antimicrobial doses, and also through breastfeeding) has been linked to an increased probability of pyloric stenosis (a condition affecting the gastro-intestinal tract, leading to severe vomiting) in young infants.

ENROFLOXACIN AND CIPROFLOXACIN

Enrofloxacin is a synthetic antibiotic belonging to the fluoroquinolone class, and is used to treat bacterial infections; it is used as a growth promoter in cattle. Repor tedly, beekeepers are now using it as well. Ciprofloxacin is a metabolite of enrofloxacin and is used in the poultry farming industry.

HEALTH IMPACTS: Tests done on rats and rabbits suggest these antibiotics may be terratogens and lethal for embryos. The US Food and Drug Administration’s Center for Veterinary Medicine has proposed to withdraw approval for the use of fluoroquinolone anitibiotics in poultry, based not on the drugs’ direct toxicity but on its potential for increasing human pathogen resistance.

The methodology

The samples were analysed in triplicate (each sample was tested thrice and the results given as average of three tests) using High Performance Liquid Chromatography (HPLC) with Diode Array Detector (DAD) and Fluorescence Detector (FLD). Internationally accepted published methods were used for analysis and validated by PML. The results were confirmed by spiking.

The sample

The 12 honey samples were bought randomly by PML from various markets in Delhi in July 2009. Of these, 10 were Indian brands and two were imported brands. None of the packages mentioned the source of the honey; it is, therefore, difficult to say whether the honey was produced and packaged in India, or was imported and then packaged in India, or is a mix of imported and domestic honey

THE DOMESTIC BRANDS INCLUDED:

  • Dabur Honey of Dabur India Ltd, which holds over 75 per cent of the market share in the branded segment.
  • Himalaya Forest Honey of Himalaya Drug Company, which is one of India’s oldest Ayurveda drug companies.
  • Patanjali Pure Honey of Patanjali Ayurved Ltd, Haridwar.
  • Baidyanath Wild Flower Honey of Shree Baidyanath Ayurved Bhavan Pvt Ltd (Kolkata), a well known name which has about 10 per cent share in the branded honey market.
  • Khadi Honey of Khadi Gramudyog Sewa Samiti, Bihar.
  • Mehsons Honey of Mehsons India Ltd, a Bareilly-based company involved in the honey and beeswax business; it also exports medicines and herbs.
  • Gold Honey of Vardhman Food & Pharmaceuticals, Faridabad, Haryana.
  • Umang Honey of Udyog Bhartiya, Delhi, a registered Khadi and Village Industries (KVI) society.
  • Hitkari Honey of Hitkari Pharmacy, Delhi.
  • Himflora Gold of Food Max, NOIDA.

THE TWO IMPORTED BRANDS WERE:

  • Capilano Pure & Natural Honey of Capilano Honey Ltd, Australia. This company is the market leader in Australia, exports honey to over 40 countries, and has large markets in Asia, North America, Middle East and Europe.
  • Nectaflor Natural Blossom Honey of Narimpex AG with its production site in Biel, Switzerland. It is a well-known supplier of honey, dried fruits and nuts.

 

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