Isolation and microbial transformation of tea sapogenin from seed pomace of Camellia oleifera with anti-inflammatory effects

In the current study,tea saponin,identified as the primary bioactive constituent in seed pomace of Camellia oleifera Abel.,was meticulously extracted and hydrolyzed to yield five known sapogenins:16-O-tiglogycamelliagnin B(a),camelliagnin A(b),16-O-angeloybarringtogenol C(c),theasapogenol E(d),theasapogenol F(e).Subsequent biotransformation of compound a facilitated the isolation of six novel metabolites(a1−a6).The anti-inflammatory potential of these compounds was assessed using pathogenassociated molecular patterns(PAMPs)and damage-associated molecular patterns molecules(DAMPs)-mediated cellular inflammation models.Notably,compounds b and a2 demonstrated significant inhibitory effects on both lipopolysaccharide(LPS)and high-mobility group box 1(HMGB1)-induced inflammation,surpassing the efficacy of the standard anti-inflammatory agent,carbenoxolone.Conversely,compounds d,a3,and a6 selectivity targeted endogenous HMGB1-induced inflammation,showcasing a pronounced specificity.These results underscore the therapeutic promise of C.oleifera seed pomace-derived compounds as potent agents for the management of inflammatory diseases triggered by infections and tissue damage.

桑蚕丝织物茶皂素脱胶工艺研究

为减轻桑蚕丝化学脱胶造成的环境污染,节能降耗,采用茶皂素冷轧堆工艺对桑蚕丝织物进行脱胶处理,通过正交试验分析了茶皂素质量浓度、氢氧化钠质量浓度、保险粉质量浓度、堆置时间对织物练减率及白度的影响,得出茶皂素冷轧堆脱胶最佳工艺为:氢氧化钠8 g/L,茶皂素7 g/L,保险粉3 g/L,堆置时间18 h。结果表明,织物经茶皂素冷轧堆脱胶后,可以达到与传统的皂碱煮沸脱胶法相近的白度、毛效和练减率,断裂强力略有降低,但是织物弹性提高。