Sixteen title compounds were synthesized, twelve of which are new ones. Their structures were determined by 1H NMR, IR and MS, the refractive indices or melting points were measured. Odors of all the title compounds w...Sixteen title compounds were synthesized, twelve of which are new ones. Their structures were determined by 1H NMR, IR and MS, the refractive indices or melting points were measured. Odors of all the title compounds were evaluated and the structure-odor relationship was briefly discussed.展开更多
Ten endo-a-substituted-bicyclo[2.2.2]octenyl(and octanyl)methanols were synthesized,their odors were evaluated. We have previously reported the syntheses and structure-odor relationship of two series of endo-bicyclo[2...Ten endo-a-substituted-bicyclo[2.2.2]octenyl(and octanyl)methanols were synthesized,their odors were evaluated. We have previously reported the syntheses and structure-odor relationship of two series of endo-bicyclo[2.2.1]heptenyl(and heptanyl)methanols^(1.2).In order to study the effect of the bicyclic skeleton on odor,ten of the title compounds have been synthesized.展开更多
The research study properties of the starch-based foam from mixed between tapioca starch and octenyl succinate starch (OSA starch), have addition alpha-chitin prepared by hot compression molding method. Tapioca starch...The research study properties of the starch-based foam from mixed between tapioca starch and octenyl succinate starch (OSA starch), have addition alpha-chitin prepared by hot compression molding method. Tapioca starch with 50% OSA starch was investigated. For composite foam tapioca starch mixed by adding alpha-chitin at 5% - 30% of starch weight, it was found that water absorption was reduced. The higher alpha-chitin content in blending foam, the denser of foam structure observed which resulted in increasing of the foam density. The maximum bending stress of composite starch was decreased, but increasing the maximum bending strain.展开更多
1-Octacosanol(1-Octa)is recognized worldwide as a functional anti-fatigue agent with additional antiinflammatory and energy-boosting benefits.However,it has low bioavailability owing to the poor water solubility and i...1-Octacosanol(1-Octa)is recognized worldwide as a functional anti-fatigue agent with additional antiinflammatory and energy-boosting benefits.However,it has low bioavailability owing to the poor water solubility and instability in the gastrointestinal tract;this limits its use in food,medical,and health care products.To address this,we aimed to prepare a water-soluble octenyl succinate anhydride debranched starch(OSD)-Octa complex and investigate the effects of degree of substitution of OSD and reaction temperature on the drug loading,structure,and water solubility of the complex.The contact angle of free 1-Octa was 110.3°,which decreased to<55°in the complex,and the solubility of 1-Octa in the complex ranged from 0.329±0.008 to 1.532±0.023 mg/mL,which indicated a notable increase in the aqueous solubility of 1-Octa.Furthermore,1-Octa was found to penetrate the amylose helical cavity of OSD and form exohydrophilic and endohydrophobic nanoparticles with OSD through hydrophobic interaction.Finally,OSD-Octa effectively mitigated the degradation of 1-Octa under extreme pH conditions and in the presence of digestive enzymes compared to that of free 1-Octa.These findings suggest that the OSD system is an effective approach to enhancing the solubility and stability of hydrophobic functional factors.展开更多
基金Supported hy the National Natural Science Foundation of China
文摘Sixteen title compounds were synthesized, twelve of which are new ones. Their structures were determined by 1H NMR, IR and MS, the refractive indices or melting points were measured. Odors of all the title compounds were evaluated and the structure-odor relationship was briefly discussed.
文摘Ten endo-a-substituted-bicyclo[2.2.2]octenyl(and octanyl)methanols were synthesized,their odors were evaluated. We have previously reported the syntheses and structure-odor relationship of two series of endo-bicyclo[2.2.1]heptenyl(and heptanyl)methanols^(1.2).In order to study the effect of the bicyclic skeleton on odor,ten of the title compounds have been synthesized.
文摘The research study properties of the starch-based foam from mixed between tapioca starch and octenyl succinate starch (OSA starch), have addition alpha-chitin prepared by hot compression molding method. Tapioca starch with 50% OSA starch was investigated. For composite foam tapioca starch mixed by adding alpha-chitin at 5% - 30% of starch weight, it was found that water absorption was reduced. The higher alpha-chitin content in blending foam, the denser of foam structure observed which resulted in increasing of the foam density. The maximum bending stress of composite starch was decreased, but increasing the maximum bending strain.
基金supported by National Natural Science Foundation of China(22276078,32302066)Research Program of State Key Labora-tory of Food Science and Resources,Jiangnan University(No.SKLF-ZZB-202406)+1 种基金China Postdoctoral Science Foundation(2023M731337)Postdoctoral Fellowship Program of CPSF(GZC20230986).
文摘1-Octacosanol(1-Octa)is recognized worldwide as a functional anti-fatigue agent with additional antiinflammatory and energy-boosting benefits.However,it has low bioavailability owing to the poor water solubility and instability in the gastrointestinal tract;this limits its use in food,medical,and health care products.To address this,we aimed to prepare a water-soluble octenyl succinate anhydride debranched starch(OSD)-Octa complex and investigate the effects of degree of substitution of OSD and reaction temperature on the drug loading,structure,and water solubility of the complex.The contact angle of free 1-Octa was 110.3°,which decreased to<55°in the complex,and the solubility of 1-Octa in the complex ranged from 0.329±0.008 to 1.532±0.023 mg/mL,which indicated a notable increase in the aqueous solubility of 1-Octa.Furthermore,1-Octa was found to penetrate the amylose helical cavity of OSD and form exohydrophilic and endohydrophobic nanoparticles with OSD through hydrophobic interaction.Finally,OSD-Octa effectively mitigated the degradation of 1-Octa under extreme pH conditions and in the presence of digestive enzymes compared to that of free 1-Octa.These findings suggest that the OSD system is an effective approach to enhancing the solubility and stability of hydrophobic functional factors.
