All Things Sweet about the Chemistry of Honey



Honey has been crowned as a health elixir for its endless health benefits and it is the only food that is produced by insects and eaten by humans, without the need to be processed first.  The many benefits of honey are:



·         Treatment  of  sore throat, ulcers and burns


·         Anti-bacterial properties


·         Anti-oxidant properties


·         Guard against heart disease


·         Good for weight loss



The Chemical Composition of Honey
Honey is made up of a range of chemicals with a large percentage composed of glucose and fructose and also consists of up to 17% water content [1]. Gluconic acid is also a compound found within honey along with a group of other acids which create a pH of about 3-4 (acidic conditions) and low amounts of hydrogen peroxide, which therefore make it difficult for bacterial growth to exist within honey, prolonging its shelf life to almost infinity and a reason for its anti-bacterial properties (see fig 1 below).





The golden honey was used as an antiseptic for wounds, burns and ulcers and as a healing promoter in the ancient times and was famous for its antibacterial properties. Lots of research was dedicated to study the antibacterial effects of honey; and one study conducted by Zaghloul et al [2] studied the anti-bacterial and antifungal effect of honey.  The results showed that the ethyl acetate honey extract showed antibacterial, anti-Candida and antifungal effects at low concentrations.


Another study conducted by Kwakman et al [3] studied the bactericidal activity of Revamil (Bfactor) honey and it was found that it was a promising antibacterial agent for prevention or treatment of infections, including those caused by multi-drug-resistant bacteria. Revamil was also found to be potent in vitro and showed bactericidal activity against antibiotic resistant, gram-positive and gram-negative bacteria.




The ongoing argument: Can type 2 diabetics use honey


as a sweetener rather than sugar or aspartame?


The simple answer is yes but under strict conditions. 


The bee product is sweeter than normal sugar, so you can use a smaller amount.  However honey actually has significantly more carbohydrates and more calories per teaspoon than granulated sugar. On the other hand honey also has a lower Glycaemic Index (GI) i.e it does not raise blood sugar levels as quickly as in sugar and it also requires lower levels of insulin, to be secreted, compared to regular white sugar. [4] 


Honey is also used as an aid to weight loss. A study by Bahrami et al [5] showed that during an eight week clinical trial; the consumption of honey reduced body weight and ameliorated cardiovascular risk factors in healthy humans and patients with increased risk factors. It also reduced the total cholesterol amount in the body and caused weight loss.


However it also caused Low Density Lipoprotein (LDL) concentrations decreased and High Density Lipoprotein (HDL) blood concentrations increased significantly and haemoglobin concentration increased in type 2 diabetics [6]. It is therefore advised, for type 2 diabetics, that honey is consumed as part of a stable diet, in low quantities and under strict control of calories and dietary intake.  


Anti-oxidant Properties of Honey







The main family of anti-oxidants in honey are called the flavonoids.  Other anti-oxidants in honey are glucose oxidase, catalase, phenolic acids, ascorbic acid and many other compounds including pinocembrin which were tested by using free radical-scavenging and ferric reducing/antioxidant power (FRAP) assays [7]. Pinocembrin is a unique flavonoid in bee honey which is a potent anti-oxidant and can efficiently combat free radicals in the human body.  It has also been found that the darker the colour of honey, the stronger its anti-oxidant activity.[8]


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References
[2] Zaghloul, A. A., et al. "Honey, a prospective antibiotic: extraction, formulation, and stability." Die Pharmazie 56.8 (2001): 643-647.
[3] Kwakman, Paulus HS, et al. "Medical-grade honey kills antibiotic-resistant bacteria in vitro and eradicates skin colonization." Clinical Infectious Diseases46.11 (2008): 1677-1682.
[4] Roy, Gopendra Kishore. "HONEY-THE HEALTHY NATURAL ELIXIR." Science Horizon (2013): 24. http://www.orissabigyanacademy.nic.in/pdf/june_2013_SH.pdf#page=26
[8] http://www.chm.bris.ac.uk/webprojects2001/loveridge/index-page3.html





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