Ascend JFD-72F User Manual

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DINTERIA
NR.
16
-
WINDHOEK
SW.A. - NOVEMBER 1982
Chemical composition
of
some Lichen species
occurring in the' N amib Desert,
South West Africa
J. J. Joubert!,
P.
L.
Steyn 2, T. J. Britz
3
and D. C. J. Wessels
4
ABSTRACT
The protein content
of
three species
of
lichens from the Namib Desert was determined
by means
of
the conventional Kjeldahl technique.
Of
these, Parmelia hottentotta had
the higliest protein content (16,24%), followed by Omphalodium convolutum (14,42%)
and Teloschistes capensis
(13,45%)~
Acid hydrolysis
of
thalli
of
the three species
yielded fructose, galactose and glucose as
well
as the amino sugar glucosamine. The
hydrolysate also contained a variety
of
amino acids.
/
1 A viva,
67
Beatrix Street, 0002 Pretoria.
2 Department
of
Microbiology and Plant Pathology, University
of
Pretoria, 0002 Pretoria.
3 Department
of
Microbiology, University
of
the Orange Free State, 9300 Bloemfontein.
4 Department
of
Botany, Umversity
of
the North, Private Bag X5090, 0700 Pietersburg .
./
33
Reproduced by Sabinet Gateway under licence granted by the Publisher (dated 2012)
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1 2 3 4 5 6 ... 11 12

Summary of Contents

Page 1 - South West Africa

DINTERIA NR. 16 -WINDHOEK SW.A. - NOVEMBER 1982 Chemical composition of some Lichen species occurring in the' N amib Desert, South West Africa

Page 2 - 1) was f6und

TABLE 3: Qualitative amino sugar and carbohydrate analysis of three species of Namib Desert Lichens. Amino sugars and carbohydrates Glucosamine ...

Page 3 - Parmelia hOllentOtla Ach

ACKNOWLEDGEMENTS The authors are indebted to the Director, SWA Administration Department of Nature Conservation and Tourism for supplying the mat

Page 4 - Plale 2:

INHALT DER BISHER ERSCHIENENEN AUSGABEN: Nummer I: (November 1968,51 S .. I Karte, 16 Fotos) Giess, W., Kurt Dinter -, A short report on the veget

Page 5

UITTREKSEL Die proteininhoud van drie ligeenspesies uit die N amib-woestyn is deur middel van die konvensionele Kjeldahl-metode bepaal. Van die dri

Page 6 - ± 0,004

Plate I: Parmelia hOllentOtla Ach. In its natural surrounding. (Photo W. Giess) 35 Reproduced by Sabinet Gateway under licence granted by the Pub

Page 7 - & Kuznetsova, 1965)

Plale 2: Ompha/odium COllrO/Ulum Hue. In ilS nalural surrounding. 36 Reproduced by Sabinet Gateway under licence granted by the Publisher (dated 20

Page 8 - Wachtmeist~r

Plate 3: Te/oschisles cilpellsis (L.L) Malme. In its natural surrounding. (Photo W. Giess) 37 Reproduced by Sabinet Gateway under licence granted

Page 9 - ... '

Amino acid and amino sugar assay The fragmented thalli were washed in 0,5 M sodium phosphate butTer (pH 7,5) and lyophilized. Ten mg of tha

Page 10

according to Stahl (Type 60 - Merck). The solvent system ethyl acetate (65 cm3) and 35 cm3 isopropanol-water mixture (2:1) was used. (Akhrem &am

Page 11

discussed by Richardson (1977). As the chances are remote that the lichen growth of the area will be used as a food source by non-ruminant m

Page 12 - Wolfsmilchgewach~e

galactose are known constituents of lichens after chemical hydrolysis. Doubtful amounts of lactose could only be detected in O. convolutum.

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