近红外光谱法测定毛竹综纤维素的含量研究 - ICBR

271
20072
Chem istry and Industry of Forest Products
Vol. 27 No. 1
Feb. 2007
1 , 13 , 2 , 1
(1. , 100091; 2. , 100102)
: (N IR)
54,,
25,5441,
J IANG Ze2hui10111675 nm19302488 nm,( PLS1)
,,
(R P
)0. 95,( SEP)0. 76 %
: ;;;
: TQ91: A: 0253 - 2417 (2007) 01 - 0015 - 04
Study on Determination of Holocellulose Content of Bamboo by
Near2infrared Reflectance Spectroscopy
J IANG Ze2hui 1 , L I Gai2yun 1 , WANG Ge 2 , HUANG An2m in 1
(1. Research Institute ofWood Industry, CAF, Beijing 100091, China;
2. International Center for Bamboo and Rattan, Beijing 100102, China)
Abstract: A rap id determ ination of holocellulose content of bamboo ( Phyllestachys heterocycla (Carr. )M itford cv. pubescens) has
been developed by near2infrared reflectance spectroscopy (N IR) coup led by multivariate statistical analysis technique.
The holo2
cellulose contents of 54 samp les were analyzed with traditional wet chem ical technique, the spectra of which were collected by
N IR. After the spectra were converted to the second derivative spectra with a gap of 25 nm, the p rediction model for the holocel2
lulose content of bamboo samp les was established using partial least2square regression ( PLS1 ) and full cross validation in the
range of 1011 - 1675 nm and 1930 - 2488 nm.
obtained from traditional chem ical method.
( SEP) is 0. 76 %.
H igh correlations were obtained between the p redicted N IR results and those
The correlation coefficient of p rediction model is 0. 95 and standard error of p rediction
Key words: Phyllestachys heterocycla (Carr. )M itford cv. pubescens; holocellulose; near2infrared reflectance spectroscopy; PLS1
2000 cm - 1 ,
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[ 1 ]
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CHOH
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16
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,( Euca lyptus g lobulus L. )
( E. nitens) ( P inus taeda L. )
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, [ 7 ]
,
,
1
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:( Phyllestachys heterocycla ( Carr. ) M itford cv.
pubescens)
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: LabSpec R
Pro,: 3502500 nm ,512PDA;
: 1. 4 nm (3501050 nm) , 2 nm (10002500 nm ) ;: 3 nm ( 700 nm )10 nm ( 1400 nm,
2100 nm) ,ASD
1. 2
GB /T 2677. 10 - 1995 ,
1. 3N IR
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,( 350
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1 ,: 17
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2677. 10 - 1995,, 540. 17,
samp les
1
Table 1Analytical results of holocellulose contents for the 54 samp les
number
/ %
mean
/%
standard deviation ( SD) m in.
/%
max.
SD
mean SD for parallel
experiments
22 years old 18 66. 55 2. 68 60. 36 70. 49 0. 17
44 years old 18 67. 48 1. 42 64. 93 69. 74 0. 17
66 years old 18 66. 03 2. 79 59. 68 68. 79 0. 18
outer part 18 68. 34 0. 78 66. 77 70. 02 0. 14
m iddle part 18 66. 94 2. 12 63. 01 70. 49 0. 23
inner part 18 64. 78 2. 49 59. 68 68. 30 0. 15
0. 52. 5 m 27 66. 12 2. 98 59. 68 70. 49 0. 19
4. 56. 5 m 27 67. 25 1. 51 62. 26 69. 07 0. 16
total 54 66. 69 2. 41 59. 68 70. 49 0. 17
2. 2
154
,, ,
,
, [ 1 ] ,
25,,,
,
2. 3
3501010 nm,(1)
(2 3) ,,1676
1880 nm,,,,
1923 nm,,16761929 nm
, (24892500 nm ) ,,
3501010 nm , 16761929 nm24892500 nm

18
27
,10111675 nm19302488 nm,,
,
, [ 1 ]
,
54,
,41
,6,
(R P )0. 95,
( SEP)0. 76 %
3
354
Fig. 3 Regression coefficients between holocellulose contents
and the second derivative spectral data of 54 powdered
bamboo samp les
25,54
41,,
,,
:
[ 1 ]. [M ]. :, 2005: 9, 98- 103, 122.
[ 2 ]. [M ]. :, 2001: 163, 214.
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[ 7 ],,,. X[ J ]. , 2006, 26 ( 7) : 1230-
1233.
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