Antimicrobial activity of flavonoids from Sedum aizoon L. against Aeromonas in culture medium and in frozen pork

Abstract

The chemical composition and antimicrobial activity of flavonoids from Sedum aizoon L. against Aeromonas in vitro were investigated, and the effect of flavonoid treatment on the quality of fresh pork during frozen storage for 6 months was also explored. The results showed that kaempferol, quercetin dihydrate, and catechin were the most predominant flavonoids from S. aizoon L. Flavonoids exhibited antibacterial activity to Aeromonas in vitro, which caused membrane damage, disruption of the bacterial surface, and internal ultrastructure, and resulted in the leakage of reducing sugars and proteins. Meanwhile, flavonoid treatment retarded the microbial growth and deteriorates of pork characteristics, including pH value, total volatile basic nitrogen (TVB‐N), texture, and sensory evaluation during frozen storage, thereby prolonged the shelf life. Their results suggested that flavonoids from S. aizoon L. offer a promising choice for food safety and preservation.

Variation of Microbial Community and Fermentation Quality in Corn Silage Treated with Lactic Acid Bacteria and Artemisia argyi during Aerobic Exposure

“…This also explains why mold and yeast populations were significantly inhibited and contents of mycotoxins were lower during aerobic exposure stages in AA groups, which had significantly higher TF contents in these groups from 60 d fermentation to the whole aerobic exposure as for this study. Furthermore, TF that was negatively with Acetobacter , Enterobacteria , Kazachstania and Pichia , also the same as reports that TF were effective antibacterial against undesirable microorganisms such as Aeromonas , Staphylococcus aureus , Escherichia coli , Fusarium , Aspergillus and some yeasts [ 54 , 55 , 56 , 57 , 58 ]. In conclusion, TF from AA inhibit undesirable microorganisms to improve the quality of fermented feed during the fermentation and aerobic exposure process, and the results also provide further evidence that rarely reported AA can be used as additives in fermented feed.…”

Effect of different drying methods on phenolic compounds and antioxidant capacity in different fractions of Sedum aizoon L.

“…Meanwhile, this herb could also reduce the risk of chronic and cardiovascular diseases and effectively improve the blood pressure and cholesterol levels in the human body (Xu et al., 2015). The health beneficial properties of Sedum aizoon L. have been confirmed to be attributed primarily to phytochemicals, such as flavonoids, phenolic acids, polysaccharose, and alkaloids according to the previous studies (Lin et al., 2014; Liu et al., 2012; Xu et al., 2019). For instance, it has been reported that Sedum aizoon L. contained high levels of myricetrin, myricetin, quercitrin, quercetin, gallic acid, and kaempferol (Lin et al., 2014; Liu et al., 2012; Xu et al., 2019; Yan, 2013).…”

“…The health beneficial properties of Sedum aizoon L. have been confirmed to be attributed primarily to phytochemicals, such as flavonoids, phenolic acids, polysaccharose, and alkaloids according to the previous studies (Lin et al., 2014; Liu et al., 2012; Xu et al., 2019). For instance, it has been reported that Sedum aizoon L. contained high levels of myricetrin, myricetin, quercitrin, quercetin, gallic acid, and kaempferol (Lin et al., 2014; Liu et al., 2012; Xu et al., 2019; Yan, 2013). Sedum aizoon L. has gained much attention as a functional food in the field of food and pharmaceutical sciences due to its functional features (Dong et al., 2020; Liang, Liu, Zhao, & Li, 2009; Liu et al., 2012; Xu et al., 2018; Yan, 2013).…”

“…Sedum aizoon L. is also known as “tusanqi” in China and it is served as a traditional medicine with multiple health beneficial features (Li et al., 2011; Liu, Ma, Wu, Lai, & Zhang, 2012). For example, it has been reported that Sedum aizoon L. could help dissipate blood stasis, improve soothing nerves, and tranquilize the moods of patients (Xu et al., 2015; 2019). Meanwhile, this herb could also reduce the risk of chronic and cardiovascular diseases and effectively improve the blood pressure and cholesterol levels in the human body (Xu et al., 2015).…”

Antimicrobial, antioxidant activities and toxicity on Cavia porcellus of Dialium angolense Welw. Ex Oliv, a traditional medicinal plant from Bagira in Eastern of DR Congo

“…It is more active than Dialium corbisieri Staner, aqueous extract on E. coli (ID = 0 and 11 mm), S. aureus (ID = 0 and 10 mm), C. albicans (ID = 0 and 10 mm) [48]. It is likely that the polyphenolic compounds, and particularly flavonoids [59][60][61], would be both responsible for antioxidant and antibacterial activities of leaves and fruits of D. angolense. The antimicrobial activity of flavonoids has previously been demonstrated [62][63][64] and several antimicrobial mechanisms of compounds in these groups have been demonstrated [59].…”