Wan Xi Peng

Study on Biomedical Resources of Benzene/Alcohol Extractives of Eucalyptus Leaves by GC/MS

Eucalyptus leaves have been used as a common traditional herbal medicine for more than 200 years. In order to further utilize Eucalyptus leaves in biomedicine and put forward new ideas for biomedical manufacturing, the biomedical resources of extractives of Eucalyptus dunnii and Eucalyptus grandis leaves were analyzed by GC/MS. The results showed that: 1) The main constituents of benzene/ethanol extractives in E. dunnii leaves were α-amyrin(9.05%), cyclohexyl-15-crown-5-(6.51%), 1,4,7, 10,13,16-hexaoxanonadecane, 18-propyl-(6.09%), vitamin E (5.83%), 1,19-eicosadiene(5.65%), 1,4-dioxane-2,6-dimethanol(5.32%), coumarin-6-ol, 3,4-dihydro -4,4-dimethyl-7-nitro-(4.42%), 2-furancarboxaldehyde, 5-(hydroxymethyl)- (4.21%), benzene, 1,2,3 -trimethoxy-5-methyl(3.45%), etc. 2) The main constituents of benzene/ethanol extractives in E. grandis leaves were (-)-globulol (7.35%), 1,2,3-benzenetriol(7.17%), D-allose(6.37%), 2- furancarboxaldehyde,5-(hydroxymethyl)-(6.33%), N1-(4-hydroxybutyl)-N3-methylguanidine acetate(5.35%), 1,4,7,10,13,16-hexaoxanonade–cane,18-propyl-(3.95%), vitamin E(3.26%), cyclohexyl-15-crown-5-(3.13%), eucalyptol(2.91%), etc. The results of function analyses suggested that the benzene/ethanol extractives of both E. dunnii and E. grandis leaves were abundant in materials of noble natural biomedicines, and also contained constituents which could be developed into top value-added materials of cosmetics and health care.

Analysis on Health Risk of Volatile Organic Compounds of Smoked Bamboo Biomaterial by TD-GC-MS

Smoked bamboo, which was made by bamboo in high temperature smoke, is a new indoors materials. In order to evaluate its potential health risk to human settlements, the volatile organic compounds of smoked bamboo biomaterial were adsorbed and determined by TD-GC-MS. And the main constituents of volatiles at 60°С were cyclononasiloxane, octadecamethyl-(35.14%), acetic acid(23.27%), cyclotrisiloxane, hexamethyl- (9.53%), bicyclo[4.4.0]dec-1-ene,2-isoprop yl-5-methyl-9-methylene-(7.56%), silane, 1,4-phenylenebis[trimethyl(4.32%), 1,3-benzodioxole, 5-(2-propenyl)- (3.47%), cedrol(2.75%), etc. (2) The main constituents of volatiles at 130°С were acetic acid(43.78%), 2,5-furandione, dihydro-3- methylene-(16.57%), 1,3-benzodioxole, 5-(1-propenyl)-,(z)-(6.75%), octasiloxane, 1,1,3,3,5,5,7,7,9,9, 11,11,13, 13,15,15- hexadecamethyl -(4.09%), bicyclo[2.2.1]heptan-2-one, 1,7,7- trimethyl-, (1s)- (3.21%), etc. Generally, the smoked bamboo biomaterial was safe under 60-130°С.

Py-GC-MS Analysis on Benzene-Alcohol Extractives of Phyllostachys pubescens for Biomedical Engineering

In order to evaluate its potential biomedicines, the extractives of Phyllostachys pubescens were extracted and determined by Py-GC-MS. And the main constituents were 1-phenanthrenecarboxylic acid, 1,2,3,4,4a,9,10,10a-octahydro-1,4a-dimethyl-7-(1-methylethyl)-(% 7.02), stigmast-5-en-3-ol, oleate(4.33%), 4,4,6a,6b,8a,11,11,14b-octamethyl-1,4,4a,5,6,6a,6b,7,8, 8a,9,10,11,12,12a,14,14a,14b-octadecahydro-2h-picen-3-one(3.39%), etc. So the benzene-alcohol extractives of Phyllostachys pubescens could be used for biomedical engineering.

Analysis on Function Components and Biohealth Function of Pinus massoniana Lamb Biomass

Pinus massoniana resources have been used as meidicine for a long time. Therefore, the 120°С volatiles of Pinus massoniana biomass were identified by TD-GC/MS. The main function components of Pinus massoniana Lamb biomass at 120°С were 1,4-methanoazulene, decahydro-4,8, 8-trimethyl-9-methylene-(36.04%), 1,4-methanoazulen-3-ol, decahydro-1,5,5,8a-tetramethyl-(13.95%), .alpha.-pinene(9.36%), 1,2,4-methenoazulene,decahydro-1,5,5,8a-tetramethyl-(5.95%), tricyclo[5.4.0.0(2,8)]undec-9-ene, 52,6,6,9-tetramethyl-(3.74%), caryophyllene oxide(2.9%), tricyclo[5.4.0.0(2,8)]undec-9-ene, 2,6,6,9-tetramethyl-(2.87%), bicyclo[2.2.1]heptan-2-one, 1,7,7- trimethyl-, (1r)- (2.82%), p-menth-1-en-8-ol(1.92%), 1,3-benzodioxole, 5-(2-propenyl)- (1.4%), (+)-longicamphenylone(1.39%), eucalyptol(1.21%), etc. It showed that the volatiles of Pinus massoniana Lamb biomass at 120°С had some biohealth function.

Effect of Red Extractives of Plantation Woods on Bamboo Mildewing

Bamboo is so easily Mouldy that bamboo products have no high value added utilization. Therefore, the effect of red extractives from 18 plantation woods on bamboo biology moulding was studied based on full-factor test. The results were: (1) The red extractives of plantation could mostly inhibit the growth of Penicillium expansum, but a few could inhibit the growth of Aspergillus niger. (2) The red extractives of Cunninghamia lanceolata bark and shavings, Deodar cedar branch, Eucalyptus dunnii bark, Eucalyptus tereticornis bark, Bagasse, Eucalyptus camaldulensis branch and shaving were the most effective in controlling spore germination of Penicillium expansum, and the one raphiolepsis branch was the most effective in controlling spore germination of Aspergillus niger. (3) The effect of the red extractives from Cunninghamia lanceolata bark and shaving, Deodar cedar branch, cypress branch, Eucalyptus tereticornis branch on bamboo moulding was highly remarkable on outdoor test. So the plantation woods could be used as biologic mould inhibitor for bamboo.

Py-GC-MS Analysis on Biomass Energy Components from Wood Extractives of Eucalyptus urophydis under High Temperature

In order to widely use Eucalyptus urophydis wood, its ether/acetone extractives were identified by Py-GC/MS. The main and abundant constituents of 750°С pyrolysis products were 1,3-butadiene, 2-methyl-(5.9%), benzofuran, 2,3-dihydro-(4.11%), 1,3-butadiene(3.69%), stigmastan-3,5-diene (3.66%),.gamma.-sitosterol(2.13%), 2-butene, 2,3-dimethyl-(2.03%), toluene (1.92%), 1,4- cyclohexadiene,1-methyl-(1.76%), 1h-indene, 5-butyl-6-hexyloctahydro-(1.73%), 1,3-cyclohexadiene(1.66%), phenol(1.58%), 1-hexene(1.54%), sulfide, bis(2-cyano-3,4- dihydro- 2,3,3-trimethyl-2h-pyrrol-5-yl)- (1.46%), benzene(1.38%), phenol, 4-methyl-(1.35%), cholest-8(14)- ene-3,15-dione(1.23%), acetic acid(1.21%), benzene, 1,2,4-trimethyl-(1.2%), stigmast-4-en-3-one (1.12%), 1-decene(1.1%), 1-heptene(1.08%),etc. So the ether/acetone extractives of Eucalyptus urophydis biomass were used as biomass energy.

Effection of Wood Extractives on Burning Time of Fuel for Add-On Bioenergy

In order to explore the application prospects of wood extractives in the biomass energy, the several wood extractives were isolated by organic solvent. The results of functional analysis suggested that these wood extractives could accelerate benzene-alcohol’s burning, but played a certain role in inhibiting ether’s burning. This reslut revealed that the wood extractives had huge potential applications in the field of add-on bioenergy.

Study on Inhibition Effect of Extractives on Building Bamboo’s Termite Prevention

Bamboo is widely used in building construction in south China. However, Termites are the natural enemies of bamboo building. Therefore, the inhibition effect of extractives on building bamboo’s termite prevention was studied. The results shown that the benzene / ethanol extractives of camphor tree roots, camphor leaves,Cedrus deodara leaves needles, and torch pine leaves had the better toxic effect to termites among the 15 extractives.

Study on Synergy Mold Preservation to Bamboo with Extractives

In order to mold preservation to bamboo, the effect of the extractives from 28 tree leaves on bamboo biology mildewing was studied basing on full-factor test. The result was as follows: (1) The inhibition rate became lower for steam time longer. (2) The effects of soaking time and boiling time were all small at steam time of 1h. And The effects of Cinnamomum camphora leaves were better than ones of Cedrus deodara leaves. (3) Soaking, water boiling and steaming had synergy mold preservation to bamboo by Cinnamomum camphora tree root, Cinnamomum camphora leaves and Cedrus deodara leaves.

TD-GC-MS Analysis on Volatile Organic Compounds of Chinese Fir Biomass in Simulated Hot Drying Environment

a necessary process, there are many volatile organic compounds of Chinese fir biomass during hot drying to pollute environment and affect the health of the people. Therefore, the chemical components from Chinese fir biomass in simulated hot drying environment were identified by TD-GC/MS to find the possible utilization of the resources and reduce environmental pollution. The main constituents at 90°С were cedrol (25.2%), 1,2-benzenedicarboxylic acid, buty l 2-methylpropyl ester (4.62%), 4-imidazolidinone, 5-(phenylmethyl)- 2-thioxo-(3.87%), acetic acid (3.85%), 1-naphthalenepropanol, .alpha.-eth enyldecahydro-.alpha.,5,5,8a-tetra (3.03%), etc. The main constituents at 120°С were cedrol (30.54%), phenol, 2,4-bis (1,1-dimethylethyl) (3.89%), globulol (2.76%), benzofuran, 2,3-dihydro-(2.71%), cyclohexasiloxane, dodecamethyl- (2.70%), .alpha.- cadinol (2.65%), taurolidine (2.33%), 2,4,6-octatrien-1-ol, 3,7-dimethyl-(E,E)- (2.31%), etc. So the volatile organic compounds of Chinese fir biomass during hot drying could be used as biomedicine, bioenergy, and so on.