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Lemon Catnip Hydrolate as a Dual-Function Bioresource:In Vitro Assessment of Phytotoxicity and Preservative Activity 认领 引用
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作者 Milica Aćimović Milena Popov +6 位作者 Nataša Mandić Ana Tomić Biljana Lončar Lato Pezo Mirjana Cvetković Jovana Stankovic Jeremić Olja Sovljanski 《Phyton-International Journal of Experimental Botany》 SCIE 2026年第7期390-419,共30页
(1)Background:Plant hydrolates are widely generated as by-products of essential oil distillation,yet their potential biological properties remain insufficiently explored.This study evaluated whether that lemon catnip(... (1)Background:Plant hydrolates are widely generated as by-products of essential oil distillation,yet their potential biological properties remain insufficiently explored.This study evaluated whether that lemon catnip(Nepeta cataria var.citriodora)hydrolate exhibits allelopathic and antimicrobial effects in preliminary in vitro assays,contributing to the valorization of distillation residues within circular bioeconomy approaches.(2)Methods:Phytotoxic effects on germination and early seedling growth of crops(maize,soybean,and white clover)and weeds(common lambsquarters,amaranth,and wild carrot)were evaluated under in vitro conditions using hydrolate solutions(10%,20%,50%,and 100%).Germination kinetics were modelled using first-order,Elovich,double-constant,and Langmuir equations.Antimicrobial,antibiofilm,and antiadhesion activities were assessed against Gram-positive and Gram-negative bacteria and yeasts using agar diffusion and crystal violet screening assays.(3)Results:The hydrolate induced concentration-dependent inhibition of seed germination,with weed species showing greater sensitivity than crops.Complete suppression of weed germination occurred at≥50%concentration,whereas maize retained partial tolerance.Germination performance indices declined significantly with increasing concentration.In antimicrobial screening assays,the hydrolate showed greater antimicrobial activity and reduced Gram-positive bacteria,reducing Staphylococcus aureus biofilm formation by 70%and adhesion by 75%.(4)Conclusions:Lemon catnip hydrolate demonstrated screening-level allelopathic,antimicrobial and biofilm-associated inhibitory effects under in vitro conditions.These findings highlight the potential of hydrolates derived from essential oil distillation as bioactive by-products and support further investigation using quantitative antimicrobial testing and applied models to assess their practical relevance. 展开更多
关键词 Biofilm inhibition circular economy Nepeta cataria var.citriodora natural preservatives seed germination kinetics
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