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Laboratory Handbook for the Fractionation of Natural Extracts (Paperback, Softcover reprint of the original 1st ed. 1998)
Loot Price: R4,390
Discovery Miles 43 900
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Laboratory Handbook for the Fractionation of Natural Extracts (Paperback, Softcover reprint of the original 1st ed. 1998)
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1. 1 THE NEEDFOR THIS BOOK- ANACTIVE EXTRACT, WHAT HAPPENS NEXT?
All over the world at present there is greatactivity as scientists
investi- gate plants, micro-organisms, marine creatures and many
other forms of life for biological activity. There is a desire to
find out more about the interactionsbetweenone organismand another
which can be attributed to the chemical substances present in at
least one of the species con- cerned. The area where activity has
been greatest is the effect ofextracts from the flowering
plantsonhuman physiology and human pathogens, since this is very
relevant to the discovery ofnew drugs for treating dis- eases
ofhumanbeings and other mammals. However, it should be noted
thatother groups ofliving organisms are now being investigated for
the same purposes and regular reports appear in the scientific
literature which describe the activity of extracts and compounds
isolated from marine organisms, amphibians, fungi and insects.
Other types ofchemicallybased biological interactions are being
stud- ied which have implications for otherways in which conditions
canbe manipulated to serve thehuman race. Thus,
interactionsbetweenplants and insects may produce new pesticides or
repellents, interactions between two species offlowering
plantresultin herbicidalcompounds and the chemical
interactionsbetween species have environmental impli- cations. This
interdisciplinary science is sometimes called ecological chemistry
and offers many fascinating insights into the complexity oflife
onour planet. Many methods have beendevised whereby the activity
ofa compound or extract can be tested scientifically.
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