The Experts below are selected from a list of 1410 Experts worldwide ranked by ideXlab platform
Monique S J Simmonds - One of the best experts on this subject based on the ideXlab platform.
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Distinguishing chinese Star Anise from Japanese Star Anise using thermal desorption-gas chromatography-mass spectrometry.
Journal of agricultural and food chemistry, 2009Co-Authors: Melaniejayne R Howes, Geoffrey C Kite, Monique S J SimmondsAbstract:The volatile compounds from the pericarps of Illicium anisatum L., Illicium brevistylum A.C.Sm., Illicium griffithii Hook.f. & Thomson, Illicium henryi Diels, Illicium lanceolatum A.C.Sm., Illicium majus Hook.f. & Thomson, Illicium micranthum Dunn, and Illicium verum Hook.f. were examined by thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS). The volatiles desorbed from the pericarps of I. verum (Chinese Star Anise), the species traded for culinary purposes, were generally characterized by a high proportion of (E)-anethole (57.6-77.1%) and the presence of foeniculin; the latter was otherwise only detected in the pericarps of I. lanceolatum. In the pericarps of all other species analyzed, the percentage composition of (E)-anethole was comparatively lower (
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distinguishing chinese Star Anise from japanese Star Anise using thermal desorption gas chromatography mass spectrometry
Journal of Agricultural and Food Chemistry, 2009Co-Authors: Melaniejayne R Howes, Geoffrey C Kite, Monique S J SimmondsAbstract:The volatile compounds from the pericarps of Illicium anisatum L., Illicium brevistylum A.C.Sm., Illicium griffithii Hook.f. & Thomson, Illicium henryi Diels, Illicium lanceolatum A.C.Sm., Illicium majus Hook.f. & Thomson, Illicium micranthum Dunn, and Illicium verum Hook.f. were examined by thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS). The volatiles desorbed from the pericarps of I. verum (Chinese Star Anise), the species traded for culinary purposes, were generally characterized by a high proportion of (E)-anethole (57.6-77.1%) and the presence of foeniculin; the latter was otherwise only detected in the pericarps of I. lanceolatum. In the pericarps of all other species analyzed, the percentage composition of (E)-anethole was comparatively lower (
Melaniejayne R Howes - One of the best experts on this subject based on the ideXlab platform.
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Distinguishing chinese Star Anise from Japanese Star Anise using thermal desorption-gas chromatography-mass spectrometry.
Journal of agricultural and food chemistry, 2009Co-Authors: Melaniejayne R Howes, Geoffrey C Kite, Monique S J SimmondsAbstract:The volatile compounds from the pericarps of Illicium anisatum L., Illicium brevistylum A.C.Sm., Illicium griffithii Hook.f. & Thomson, Illicium henryi Diels, Illicium lanceolatum A.C.Sm., Illicium majus Hook.f. & Thomson, Illicium micranthum Dunn, and Illicium verum Hook.f. were examined by thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS). The volatiles desorbed from the pericarps of I. verum (Chinese Star Anise), the species traded for culinary purposes, were generally characterized by a high proportion of (E)-anethole (57.6-77.1%) and the presence of foeniculin; the latter was otherwise only detected in the pericarps of I. lanceolatum. In the pericarps of all other species analyzed, the percentage composition of (E)-anethole was comparatively lower (
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distinguishing chinese Star Anise from japanese Star Anise using thermal desorption gas chromatography mass spectrometry
Journal of Agricultural and Food Chemistry, 2009Co-Authors: Melaniejayne R Howes, Geoffrey C Kite, Monique S J SimmondsAbstract:The volatile compounds from the pericarps of Illicium anisatum L., Illicium brevistylum A.C.Sm., Illicium griffithii Hook.f. & Thomson, Illicium henryi Diels, Illicium lanceolatum A.C.Sm., Illicium majus Hook.f. & Thomson, Illicium micranthum Dunn, and Illicium verum Hook.f. were examined by thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS). The volatiles desorbed from the pericarps of I. verum (Chinese Star Anise), the species traded for culinary purposes, were generally characterized by a high proportion of (E)-anethole (57.6-77.1%) and the presence of foeniculin; the latter was otherwise only detected in the pericarps of I. lanceolatum. In the pericarps of all other species analyzed, the percentage composition of (E)-anethole was comparatively lower (
Geoffrey C Kite - One of the best experts on this subject based on the ideXlab platform.
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Distinguishing chinese Star Anise from Japanese Star Anise using thermal desorption-gas chromatography-mass spectrometry.
Journal of agricultural and food chemistry, 2009Co-Authors: Melaniejayne R Howes, Geoffrey C Kite, Monique S J SimmondsAbstract:The volatile compounds from the pericarps of Illicium anisatum L., Illicium brevistylum A.C.Sm., Illicium griffithii Hook.f. & Thomson, Illicium henryi Diels, Illicium lanceolatum A.C.Sm., Illicium majus Hook.f. & Thomson, Illicium micranthum Dunn, and Illicium verum Hook.f. were examined by thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS). The volatiles desorbed from the pericarps of I. verum (Chinese Star Anise), the species traded for culinary purposes, were generally characterized by a high proportion of (E)-anethole (57.6-77.1%) and the presence of foeniculin; the latter was otherwise only detected in the pericarps of I. lanceolatum. In the pericarps of all other species analyzed, the percentage composition of (E)-anethole was comparatively lower (
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distinguishing chinese Star Anise from japanese Star Anise using thermal desorption gas chromatography mass spectrometry
Journal of Agricultural and Food Chemistry, 2009Co-Authors: Melaniejayne R Howes, Geoffrey C Kite, Monique S J SimmondsAbstract:The volatile compounds from the pericarps of Illicium anisatum L., Illicium brevistylum A.C.Sm., Illicium griffithii Hook.f. & Thomson, Illicium henryi Diels, Illicium lanceolatum A.C.Sm., Illicium majus Hook.f. & Thomson, Illicium micranthum Dunn, and Illicium verum Hook.f. were examined by thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS). The volatiles desorbed from the pericarps of I. verum (Chinese Star Anise), the species traded for culinary purposes, were generally characterized by a high proportion of (E)-anethole (57.6-77.1%) and the presence of foeniculin; the latter was otherwise only detected in the pericarps of I. lanceolatum. In the pericarps of all other species analyzed, the percentage composition of (E)-anethole was comparatively lower (
Peilong Sun - One of the best experts on this subject based on the ideXlab platform.
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optimization and comparison of ultrasound assisted extraction and microwave assisted extraction of shikimic acid from chinese Star Anise
Separation and Purification Technology, 2014Co-Authors: Ming Cai, Yinlong Luo, Jia Chen, Hanhua Liang, Peilong SunAbstract:Abstract Shikimic acid is a main raw intermediate for manufacturing oseltamivir phosphate (Tamiflu), which is the only antiviral treatment for Influenzavirus A (H5N1 and H2N1), recently. Chinese Star Anise is a natural resource of shikimic acid which can be extracted by some typical technologies. Two effective technologies, ultrasound-assisted extraction (USE) and microwave-assisted extraction (MWE), were introduced to extract shikimic acid from Chinese Star Anise in this study. Effects of various variables, such as applied power, ratio of solvent to material, and extraction time on the yield by two different technologies were investigated. Results showed that ratio was the most significant factors in both methods, followed by applied power and time. In USE process, the best yield of shikimic acid, 1.367%, were obtained at an optimum condition of 480 W, 15 mL/g and 20 min using orthogonal design; while in MWE, 2.75% of yield was achieved at 500 W, 15 mL/g and 16 min by response surface methodology. USE and MWE are two promising technologies for shikimic acid extraction; however, it is still necessary to develop some integrated methods to improve the extraction yield of shikimic acid from Chinese Star Anise.
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microwave assisted extraction and antioxidant activity of Star Anise oil from illicium verum hook f
International Journal of Food Science and Technology, 2013Co-Authors: Ming Cai, Hanhua Liang, Xiangyang Guo, Peilong SunAbstract:Summary In this study, microwave-assisted extraction with ethanol (MAEE) of Star Anise oil from Illicium verum Hook.f. has been optimised by response surface methodology (RSM). A maximum yield of Star Anise oil was obtained at an optimum condition: the ratio of solvent to sample 17 mL g−1, extraction time 16 min and microwave power 505 W. Accordingly, the highest yield of Star Anise oil was about 24.98%, which was much higher than that of steam distillation (SD), 7.17%. Oxygenated organic compounds in representative of trans-anethole are a major component in Star Anise oil, nearly 94.21% for SD and 86.66% for MAEE, identified and determined by GC-MS. The oils extracted by SD and MAEE both have strong antioxidant activities that were demonstrated by the DPPH and ABTS assays.
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Microwave-assisted extraction and antioxidant activity of Star Anise oil fromIllicium verum Hook.f
International Journal of Food Science & Technology, 2013Co-Authors: Ming Cai, Hanhua Liang, Xiangyang Guo, Peilong SunAbstract:In this study, microwave-assisted extraction with ethanol (MAEE) of Star Anise oil from Illicium verum Hook.f. has been optimised by response surface methodology (RSM). A maximum yield of Star Anise oil was obtained at an optimum condition: the ratio of solvent to sample 17 mL g-1, extraction time 16 min and microwave power 505 W. Accordingly, the highest yield of Star Anise oil was about 24.98%, which was much higher than that of steam distillation (SD), 7.17%. Oxygenated organic compounds in representative of trans-anethole are a major component in Star Anise oil, nearly 94.21% for SD and 86.66% for MAEE, identified and determined by GC-MS. The oils extracted by SD and MAEE both have strong antioxidant activities that were demonstrated by the DPPH and ABTS assays.Department of Applied Biology and Chemical Technolog
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Microwave‐assisted extraction and antioxidant activity of Star Anise oil from Illicium verum Hook.f
International Journal of Food Science and Technology, 2013Co-Authors: Ming Cai, Hanhua Liang, Guo Xiangyang, Peilong SunAbstract:Summary In this study, microwave-assisted extraction with ethanol (MAEE) of Star Anise oil from Illicium verum Hook.f. has been optimised by response surface methodology (RSM). A maximum yield of Star Anise oil was obtained at an optimum condition: the ratio of solvent to sample 17 mL g−1, extraction time 16 min and microwave power 505 W. Accordingly, the highest yield of Star Anise oil was about 24.98%, which was much higher than that of steam distillation (SD), 7.17%. Oxygenated organic compounds in representative of trans-anethole are a major component in Star Anise oil, nearly 94.21% for SD and 86.66% for MAEE, identified and determined by GC-MS. The oils extracted by SD and MAEE both have strong antioxidant activities that were demonstrated by the DPPH and ABTS assays.
Sarath G Ilangantileket - One of the best experts on this subject based on the ideXlab platform.
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liquid co2 extraction of essential oil from Star Anise fruits illicium verum h
Journal of Food Engineering, 1997Co-Authors: Dang Quoc Tuan, Sarath G IlangantileketAbstract:Abstract Essential oil from dried Star Anise fruits ( Illicium verum H. ) was extracted with liquid CO 2 . The yield and the time of extraction were compared with that of the conventional steam distillation method. Extraction with liquid CO 2 yielded 9.8% more essential oil than steam distillation. The anethole contents in oils obtained by the two methods were not significantly different and were in the range of 89–92% of the total oil. The particle size of 0.425–0.710 mm and the time of 90 min were found to be optimum for both steam distillation and liquid CO 2 extraction. Two mathematical models were used to describe the relationship between the yield and time of extraction. Langmuir's adsorption model fitted the data better than the simple exponential model. Extraction of essential oil from Star Anise fruits with liquid CO 2 was better than steam distillation in terms of energy saving, product yield and product quality.
