In order to explore the application of saussurea involucrata extract in skin care products,the skin care efficacy and safety of saussurea involucrata extract were verified through hyaluronidase inhibition test,zebrafi...In order to explore the application of saussurea involucrata extract in skin care products,the skin care efficacy and safety of saussurea involucrata extract were verified through hyaluronidase inhibition test,zebrafish repair efficacy evaluation,human immortalized epidermal cell anti-photodamage test,in vitro anti-glycation test,fibroblast proliferation test,zebrafish whitening test,human clinical trial and closed patch test.The results showed that 10%of the extract passed the closed patch test,indicating that it was mild and non-irritating.Saussurea involucrata extract can inhibit hyaluronidase activity and promote the production of blocking protein,indicating that it has soothing and repairing effect at the same time.The extract can significantly inhibit the glycosylation reaction,and can effectively resist the damage of blue light and ultraviolet,and has certain anti-glycosylation and antiphotodamage effects.The extract can promote the proliferation of 3T3 cells,and has certain firming and anti-wrinkle effect.The extract can effectively inhibit the melanin production of zebrafish and has certain whitening effect.The human clinical trial comparative test confirmed that the whitening effect of 10%saussurea involucrata extract is equivalent to 7%ascorbic acid.展开更多
探索温度对贮藏期阳光玫瑰葡萄香气特征变化的影响,采用顶空固相微萃取气相色谱质谱联用(Headspace-Solid Phase Microextraction and Gas Chromatography-Mass Spectrometry,HS-SPME-GC-MS)对4个贮藏温度(0、4、10与15℃)下葡萄果实挥...探索温度对贮藏期阳光玫瑰葡萄香气特征变化的影响,采用顶空固相微萃取气相色谱质谱联用(Headspace-Solid Phase Microextraction and Gas Chromatography-Mass Spectrometry,HS-SPME-GC-MS)对4个贮藏温度(0、4、10与15℃)下葡萄果实挥发性成分定性定量,通过香气活性值(Odor Activity Value,OAV)、香气轮廓及香韵分析法对特征物质及香气特征鉴定分析。GC-MS共鉴定出55种挥发性成分,包括醛20种,醇6种、酯6种、萜烯16种及其他7种,其中16种物质被鉴定为活性香气成分(OAV>1),特征香气物质为萜烯及醛类。冰温(0、4℃)与低温(10、15℃)贮藏条件下葡萄果实特征香气轮廓变化分别趋于一致,贮藏过程特征香气变化差异主要为花香类,特别是铃、茉、兰、玫与鸳香韵。0℃贮藏更能保持葡萄新鲜果香,但花香特征损失明显;4℃与10℃贮藏8周后特征香气发生劣变,15℃贮藏6周后特征香气发生劣变。综上所述,冰温贮藏初期极易引起花香特征的减损,低温贮藏则不能在较长贮藏期内维持果实的特征香气品质。展开更多
文摘In order to explore the application of saussurea involucrata extract in skin care products,the skin care efficacy and safety of saussurea involucrata extract were verified through hyaluronidase inhibition test,zebrafish repair efficacy evaluation,human immortalized epidermal cell anti-photodamage test,in vitro anti-glycation test,fibroblast proliferation test,zebrafish whitening test,human clinical trial and closed patch test.The results showed that 10%of the extract passed the closed patch test,indicating that it was mild and non-irritating.Saussurea involucrata extract can inhibit hyaluronidase activity and promote the production of blocking protein,indicating that it has soothing and repairing effect at the same time.The extract can significantly inhibit the glycosylation reaction,and can effectively resist the damage of blue light and ultraviolet,and has certain anti-glycosylation and antiphotodamage effects.The extract can promote the proliferation of 3T3 cells,and has certain firming and anti-wrinkle effect.The extract can effectively inhibit the melanin production of zebrafish and has certain whitening effect.The human clinical trial comparative test confirmed that the whitening effect of 10%saussurea involucrata extract is equivalent to 7%ascorbic acid.
文摘探索温度对贮藏期阳光玫瑰葡萄香气特征变化的影响,采用顶空固相微萃取气相色谱质谱联用(Headspace-Solid Phase Microextraction and Gas Chromatography-Mass Spectrometry,HS-SPME-GC-MS)对4个贮藏温度(0、4、10与15℃)下葡萄果实挥发性成分定性定量,通过香气活性值(Odor Activity Value,OAV)、香气轮廓及香韵分析法对特征物质及香气特征鉴定分析。GC-MS共鉴定出55种挥发性成分,包括醛20种,醇6种、酯6种、萜烯16种及其他7种,其中16种物质被鉴定为活性香气成分(OAV>1),特征香气物质为萜烯及醛类。冰温(0、4℃)与低温(10、15℃)贮藏条件下葡萄果实特征香气轮廓变化分别趋于一致,贮藏过程特征香气变化差异主要为花香类,特别是铃、茉、兰、玫与鸳香韵。0℃贮藏更能保持葡萄新鲜果香,但花香特征损失明显;4℃与10℃贮藏8周后特征香气发生劣变,15℃贮藏6周后特征香气发生劣变。综上所述,冰温贮藏初期极易引起花香特征的减损,低温贮藏则不能在较长贮藏期内维持果实的特征香气品质。
