Figure 5.5 shows the results on composition of major elements, water, and ash.
The C, H, and N contents ranged from 46.2 to 48.4, 3.12 to 3.52, and 0.72 to 0.82%,
respectively. The ash and water contents in the samples ranged from 10.5 to 12.8 and
4.85 to 8.25%, respectively. The mean C, H, N, O, and ash contents of sclerotia
grains (n ¼ 6) were thus estimated as 47.6, 3.32, 0.79, 30.2, and 6.57%, respectively.
The water content of the samples was 11.6%. The atomic ratios of O/C and H/C
calculated on water- and ash-free bases were 0.48 and 0.83, respectively (Watanabe
et al. 2007).
a
100μm
500μm
b
c
㻜㻚㻜㻜
㻝㻚㻜㻜
㻞㻚㻜㻜
㻟㻚㻜㻜
㻠㻚㻜㻜
㻡㻚㻜㻜
㻢㻚㻜㻜
㻣㻚㻜㻜
㻤㻚㻜㻜
㻥㻚㻜㻜 㻝㻜㻚㻜㻜
㼗㼑㼂
㻞
㻜
㻝㻜㻜
㻞㻜㻜
㻟㻜㻜
㻠㻜㻜
㻡㻜㻜
㻢㻜㻜
㻣㻜㻜
㻤㻜㻜
㻥㻜㻜
㻝㻜㻜㻜
㻯㼛㼡㼚㼠㼟
㻯㻷㼍
㻺㻷㼍
㻻㻷㼍
㻭㼘㻷㼍
㻼㻷㼍
㻲㼑㻷㼍
㻼㼐㻸㼍
㻼㼐㻸㼎
Area 1
Area 2
Area 3
d
Fig. 5.4 Images of sclerotia captured with an optical microscope (a) and a scanning electron
microscope (b, c), and elemental spectra from energy dispersive X-ray analyses of areas 1–3 (d)
Table 5.2 Elemental compositions (Æ standard error, n ¼ 5) of the outer, middle, and inner
sections of sclerotia, as determined by energy dispersive X-ray spectrometry
Sample
Area
C, wt%
O, wt%
P, wt%
Al, wt%
Fe, wt%
Myoko3A Outer
62.0 Æ 2.60 34.0 Æ 2.50 0.06 Æ 0.04 3.42 Æ 0.66 0.46 Æ 0.35
Middle 61.2 Æ 2.40 34.3 Æ 2.50 0.05 Æ 0.03 3.90 Æ 0.93 0.56 Æ 0.38
Inner
61.3 Æ 2.10 33.8 Æ 1.60 0.06 Æ 0.03 4.34 Æ 0.65 0.49 Æ 0.25
82
B. Oyuntsetseg et al.