We conducted the study on afforestation technique of Xanthoceras sorbifolia Bunge. in combination with ecological environment features of Fuxian County in Shaanxi Province. Results show that it is proper to adopt &quo...We conducted the study on afforestation technique of Xanthoceras sorbifolia Bunge. in combination with ecological environment features of Fuxian County in Shaanxi Province. Results show that it is proper to adopt "sunny gentle slope+fish-scale pit+planting on ridges after dipping mud+stumping in autumn" for afforestation of Xanthoceras sorbifolia Bunge. in the Loess Plateau. It is expected that our study can play a significant role in guiding popularization of Xanthoceras sorbifolia Bunge. in the northwest of China.展开更多
Oil content from seed kernels of Xanthoceras sorbifolia from 13 areas in China was analyzed by gas chromatography–mass spectrometry to determine oil characteristics and biodiesel properties. The seeds had a high kern...Oil content from seed kernels of Xanthoceras sorbifolia from 13 areas in China was analyzed by gas chromatography–mass spectrometry to determine oil characteristics and biodiesel properties. The seeds had a high kernel percentage (53.67%± 7.51), oil content (52.21%± 4.01), and biodiesel yield (99.77%± 0.21). Among the fatty acids in the oil were high percentages of linoleic acid (41.66 ± 2.26)% and oleic acid (28.44%± 2.03). Most of the fuel properties complied well with the ASTM D6751-10, EN 14214-08, and GB/T 20828-2014 standards. The 13 sampling areas were grouped into four clusters based on different kernel percentage, oil content, biodiesel yield, and fatty acid composition. The results showed that the quality of kernel oils from seeds from Ar Horqin Banner was the best, although kernel oils from seeds in all 13 areas were suitable for biodiesel production. This study provides a basis for selecting optimal sites to harvest seeds from X. sorbifolia.展开更多
It is very important to select and identify superior Xanthoceras sorbifolia Bge. trees for purposes of breeding and exploration. For our study, we selected superior X. sorbifolia trees using RAPD （random amplificatio...It is very important to select and identify superior Xanthoceras sorbifolia Bge. trees for purposes of breeding and exploration. For our study, we selected superior X. sorbifolia trees using RAPD （random amplification of polymorphic DNA） technology. The results show that certain specific amplification bands emerged with significantly different frequencies between superior and non-superior trees. The 1400-bp band of No. 2121 primer emerged in the superior trees at a frequency 2.4 times that of the non-superior trees and the 600-bp band of No. 2153 primer in the non-superior trees at a frequency 2.5 times that of the superior trees There were very significant differences between the superior and non-superior trees. The frequency of the 1600-bp band of No. 1161 primer was the same in both kinds of trees, but significant differences were observed in point frequency （the frequency of the superior trees is 1,4 times that of the non-superior trees）. These bands can be used as important targets to distinguish between superior and non-superior trees. The use of a combination of amplified bands simultaneously can play a guiding role in the selection of superior X. sorbifolia trees.展开更多
Huge amounts of Xanthoceras sorbifolia husks(XSH)are typically discarded after oil extraction.Since pyrolysis represents a promising solution to harness the bio-energy of XSH,in the present work the pyrolytic and kine...Huge amounts of Xanthoceras sorbifolia husks(XSH)are typically discarded after oil extraction.Since pyrolysis represents a promising solution to harness the bio-energy of XSH,in the present work the pyrolytic and kinetic characteristics of XSH and related crude cellulose extract(CCE)were studied considering different rates of heating(10,30 and 50℃ min^(-1)).The pyrolysis activation energy,pre-exponential factors and mechanism function were computed using different models namely Popescu,FWO(Flynn-Wall-Ozawa)and KAS(Kissinger-Akahira-Sunose).The pyrolysis process was articulated into three stages:dehydration(Stage I),primary devolatilization(Stage II),residual decomposition(Stage III).Marked variations in the average activation energy,thermal stability,final residuals and rate of reaction were noted.Stage II of XSH and CCE could be described by the Avramic-Erofeev equations.The average activation energies of XSH and CCE were found to be 269 and 296 kJ mol^(-1),respectively.展开更多
Cutting breeding is an important method of asexual reproduction of Xanthoceras sorbifolium Bunge.At present,it has been found that the factors influencing the cuttings of X.sorbifolium mainly include cutting material ...Cutting breeding is an important method of asexual reproduction of Xanthoceras sorbifolium Bunge.At present,it has been found that the factors influencing the cuttings of X.sorbifolium mainly include cutting material type,substrate type,cutting season,cutting material length and thickness,mother tree age,cutting material pretreatment method,hormone species concentration and soaking time.Besides,different regions,control conditions,and germplasm types have different cutting rooting rates.This paper introduced some of the problems in the cuttings of X.sorbifolium,and came up with some recommendations to provide a reference for the future research and technical promotion of X.sorbifolium cuttings.展开更多
Objective: To identify phytochemical constituents present in the extract of flowers of Xanthoceras sorbifolia and evaluate their anti-oxidant and anti-hyperglycemic capacities.Methods: The AlCl3colorimetric method and...Objective: To identify phytochemical constituents present in the extract of flowers of Xanthoceras sorbifolia and evaluate their anti-oxidant and anti-hyperglycemic capacities.Methods: The AlCl3colorimetric method and Prussian Blue assay were used to determine the contents of total flavonoids and total phenolic acids in extraction layers, and the bioactive layers was screened through anti-oxidative activity in vitro. The Waters ACQUITY UPLC system and a Waters ACQUITY UPLC BEH C18column(2.0 mm × 150 mm, 5 μm) were used to identify the ingredients. And anti-oxidative ingredients were screened by off-line UPLC-QTOF-MS/MS-free radical scavenging. The ameliorative role of it was further evaluated in a high-fat, streptozotocin-induced type 2 diabetic rat model and the study was carried out on NADPH oxidase(PDB ID: 2CDU) by molecular docking.Results: Combined with the results of activity screening in vitro, the anti-oxidative part was identified as the ethyl acetate layer. A total of 24 chemical constituents were identified by liquid chromatographymass spectrometry in the ethyl acetate layer and 13 main anti-oxidative active constituents were preliminarily screened out through off-line UPLC-QTOF-MS/MS-free radical scavenging. In vivo experiments showed that flowers of X. sorbifolia could significantly reduce the blood glucose level of diabetic mice and alleviate liver cell damage. Based on the results of docking analysis related to the identified phytocompounds and oxidase which involved in type 2 diabetes, quercetin 3-O-rutinoside, kaempferol-3-O-rhamnoside, isorhamnetin-3-O-glucoside, and isoquercitrin showed a better inhibitory profile.Conclusion: The ethyl acetate layer was rich in flavonoids and phenolic acids and had significant anti-oxidant activity, which could prevent hyperglycemia. This observed activity profile suggested X. sorbifolia flowers as a promising new source of tea to develop alternative natural anti-diabetic products with a high safety margin.展开更多
基金Supported by Research on High Efficient Technology of Biomass Resource Cultivation (2006BAD07A04)a Subproject of Key Science and Technology Support Program " Agriculture and Forestry Biomass Project" of the Ministry of Science and Technology in the Eleventh-Five Plan Period
文摘We conducted the study on afforestation technique of Xanthoceras sorbifolia Bunge. in combination with ecological environment features of Fuxian County in Shaanxi Province. Results show that it is proper to adopt "sunny gentle slope+fish-scale pit+planting on ridges after dipping mud+stumping in autumn" for afforestation of Xanthoceras sorbifolia Bunge. in the Loess Plateau. It is expected that our study can play a significant role in guiding popularization of Xanthoceras sorbifolia Bunge. in the northwest of China.
基金financially supported by the International S&T Cooperation Program of China(2014DFA31140)
文摘Oil content from seed kernels of Xanthoceras sorbifolia from 13 areas in China was analyzed by gas chromatography–mass spectrometry to determine oil characteristics and biodiesel properties. The seeds had a high kernel percentage (53.67%± 7.51), oil content (52.21%± 4.01), and biodiesel yield (99.77%± 0.21). Among the fatty acids in the oil were high percentages of linoleic acid (41.66 ± 2.26)% and oleic acid (28.44%± 2.03). Most of the fuel properties complied well with the ASTM D6751-10, EN 14214-08, and GB/T 20828-2014 standards. The 13 sampling areas were grouped into four clusters based on different kernel percentage, oil content, biodiesel yield, and fatty acid composition. The results showed that the quality of kernel oils from seeds from Ar Horqin Banner was the best, although kernel oils from seeds in all 13 areas were suitable for biodiesel production. This study provides a basis for selecting optimal sites to harvest seeds from X. sorbifolia.
基金supported by a Project of the State Forestry Administration and the PetroChina Company Limited Lin-you Integrated Bio-diesel Raw Forest Base
文摘It is very important to select and identify superior Xanthoceras sorbifolia Bge. trees for purposes of breeding and exploration. For our study, we selected superior X. sorbifolia trees using RAPD （random amplification of polymorphic DNA） technology. The results show that certain specific amplification bands emerged with significantly different frequencies between superior and non-superior trees. The 1400-bp band of No. 2121 primer emerged in the superior trees at a frequency 2.4 times that of the non-superior trees and the 600-bp band of No. 2153 primer in the non-superior trees at a frequency 2.5 times that of the superior trees There were very significant differences between the superior and non-superior trees. The frequency of the 1600-bp band of No. 1161 primer was the same in both kinds of trees, but significant differences were observed in point frequency （the frequency of the superior trees is 1,4 times that of the non-superior trees）. These bands can be used as important targets to distinguish between superior and non-superior trees. The use of a combination of amplified bands simultaneously can play a guiding role in the selection of superior X. sorbifolia trees.
基金the National Natural Science Foundation of China (Grant No.30070613) and Graduate Cultivation Foundation of Beijing Forestry University(Grant No.02jj001)
基金This study was supported by the Key Research and Development Program of Shandong Province(2019 GNC106084)the Key Research and Development Program of the Innovation Research Fund of Zhaoyuan Institute of Industrial Technology(9101-220193).
文摘Huge amounts of Xanthoceras sorbifolia husks(XSH)are typically discarded after oil extraction.Since pyrolysis represents a promising solution to harness the bio-energy of XSH,in the present work the pyrolytic and kinetic characteristics of XSH and related crude cellulose extract(CCE)were studied considering different rates of heating(10,30 and 50℃ min^(-1)).The pyrolysis activation energy,pre-exponential factors and mechanism function were computed using different models namely Popescu,FWO(Flynn-Wall-Ozawa)and KAS(Kissinger-Akahira-Sunose).The pyrolysis process was articulated into three stages:dehydration(Stage I),primary devolatilization(Stage II),residual decomposition(Stage III).Marked variations in the average activation energy,thermal stability,final residuals and rate of reaction were noted.Stage II of XSH and CCE could be described by the Avramic-Erofeev equations.The average activation energies of XSH and CCE were found to be 269 and 296 kJ mol^(-1),respectively.
基金Biosafety and Genetic Resources Management Project of China National Forestry and Grassland Administration(KJZXSA202033).
文摘Cutting breeding is an important method of asexual reproduction of Xanthoceras sorbifolium Bunge.At present,it has been found that the factors influencing the cuttings of X.sorbifolium mainly include cutting material type,substrate type,cutting season,cutting material length and thickness,mother tree age,cutting material pretreatment method,hormone species concentration and soaking time.Besides,different regions,control conditions,and germplasm types have different cutting rooting rates.This paper introduced some of the problems in the cuttings of X.sorbifolium,and came up with some recommendations to provide a reference for the future research and technical promotion of X.sorbifolium cuttings.
基金the Fourth National Investigation of Chinese materia medica resources in Liaoning Province (LN2018017, LN2019019)Career Development Support Plan for Young and Middle-aged Teachers in Shenyang Pharmaceutical University (No. ZQN2021014)Key Laboratory of Marine Biogenetic Resources, Ministry of Natural Resources (No. HY202105)
文摘Objective: To identify phytochemical constituents present in the extract of flowers of Xanthoceras sorbifolia and evaluate their anti-oxidant and anti-hyperglycemic capacities.Methods: The AlCl3colorimetric method and Prussian Blue assay were used to determine the contents of total flavonoids and total phenolic acids in extraction layers, and the bioactive layers was screened through anti-oxidative activity in vitro. The Waters ACQUITY UPLC system and a Waters ACQUITY UPLC BEH C18column(2.0 mm × 150 mm, 5 μm) were used to identify the ingredients. And anti-oxidative ingredients were screened by off-line UPLC-QTOF-MS/MS-free radical scavenging. The ameliorative role of it was further evaluated in a high-fat, streptozotocin-induced type 2 diabetic rat model and the study was carried out on NADPH oxidase(PDB ID: 2CDU) by molecular docking.Results: Combined with the results of activity screening in vitro, the anti-oxidative part was identified as the ethyl acetate layer. A total of 24 chemical constituents were identified by liquid chromatographymass spectrometry in the ethyl acetate layer and 13 main anti-oxidative active constituents were preliminarily screened out through off-line UPLC-QTOF-MS/MS-free radical scavenging. In vivo experiments showed that flowers of X. sorbifolia could significantly reduce the blood glucose level of diabetic mice and alleviate liver cell damage. Based on the results of docking analysis related to the identified phytocompounds and oxidase which involved in type 2 diabetes, quercetin 3-O-rutinoside, kaempferol-3-O-rhamnoside, isorhamnetin-3-O-glucoside, and isoquercitrin showed a better inhibitory profile.Conclusion: The ethyl acetate layer was rich in flavonoids and phenolic acids and had significant anti-oxidant activity, which could prevent hyperglycemia. This observed activity profile suggested X. sorbifolia flowers as a promising new source of tea to develop alternative natural anti-diabetic products with a high safety margin.
