Lactose intolerance and Lignin

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  • Created on: 13-12-11 19:14
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Lignin And Lactose Intolerance
Lignin is a complex chemical compound most commonly derived from wood, and an integral part of
the secondary cell walls of plants and some algae. It is one of the most abundant organic polymers on
Earth, exceeded only by cellulose. Its most commonly noted function is the support through
strengthening of wood (xylem cells) in trees. Lignin fills the spaces in the cell wall between cellulose,
hemicelluloses, and pectin components It is covalently linked to hemicelluloses and, therefore, joins
different plant polysaccharides, conferring mechanical strength to the cell wall and by extension the
plant as a whole. Lignin plays a crucial part in conducting water in plant stems. The polysaccharide
components of plant cell walls are highly hydrophilic
and thus permeable to water, whereas lignin is
more hydrophobic. The joining of polysaccharides
by lignin is an obstacle for water absorption to the
cell wall. Thus, lignin makes it possible for the plant's
vascular tissue to conduct water efficiently.
(hemicelluloses= made of different types of sugar
monosaccharide's and can vary in structure and
resistance compared to cellulose which is very
resistant to hydrolysis)
Lactose Intolerance:
Lactose intolerance is the inability to digest lactose. Lactose is a type of sugar found in milk and other
dairy products. Lactose intolerance happens when the small intestine does not make enough of the
enzyme lactase. Enzymes help the body absorb foods. Not having enough lactase is called lactase
deficiency. Babies' bodies make this enzyme so they can digest milk, including breast milk.
Symptoms often occur 30 minutes to 2 hours after you eat or drink milk products, and are often
relieved by not eating or drinking milk products. Large doses of milk products may cause worse
Symptoms include:
Abdominal bloating
Abdominal cramps


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