Effects of organic and conventional production systems on the content of bioactive substances in four species of medicinal plants

Abstract

This paper aimed to compare the content of compounds with antioxidant properties in four species of medicinal plants, rosemary, peppermint, lemon balm and sage grown under organic and conventional conditions in 2 consecutive years. The dry matter and vitamin C content was determined according to Polish Standards; carotenoids and polyphenols were analysed by high-performance liquid chromatography. Organic medicinal plants contained significantly more dry matter, vitamin C, phenolic acids and total flavonoids than the plants from conventional production. On the other hand, conventional plants contained significantly more carotenoids than the organic ones. A high content of beneficial bioactive compounds in medicinal plants, especially coming from organic farming, is an important prerequisite for their use in a healthy diet.

Effects of Organic and Mineral Fertilization on Yield and Selected Quality Parameters for Dried Herbs of Two Varieties of Oregano (Origanum vulgare L.)

“…This extract is rich in a number of compounds of a potential character as an elicitor, which can produce a defense reaction in the fertilized plant. This reaction causes a number of biochemical processes leading to the creation of multiple groups of secondary metabolites [29]. The increase in polyphenol content in organically fertilized plants as a reaction of plants to biotic and abiotic stress was also reported by Young et al [30] in their study.…”

“…Unfortunately, many of the results of the studies presented in the literature on the effects of organic and conventional cultivation on polyphenols in herbs do not explain the mechanisms of this phenomenon [28,29]. The increased antioxidant potential and polyphenol content of the analyzed dried samples are likely to be the result of elicitation associated with the use of the extract from the common nettle in the organic fertilization method.…”

Organic management vs. conventional management influence the antimicrobial activity of essential oils of Origanum vulgare L

“…While studies conducted from the application of synthetic fertilizers (NPK) report that fertilizer results in rapid growth of shoot biomass and may influence the reduction of the concentration of bioactive constituents (dilution). This factor can affect not only the content and yield of the EO itself, but also modify the phytochemical profile of the species (Kazimierczak et al, 2015;Luz et al, 2014;Ayyobi et al, 2014).…”

“…In this context, there is currently a growing demand for medicinal plants, essential oils, cosmetics, herbal medicines, among other products used by the food, pharmaceutical and agricultural industry, free of pesticides and synthetic fertilizers. Whether by improving quality of life, product quality, as well as reducing the negative effects caused to the environment (Basak et al, 2020;Kazimierczak et al 2015;Tripathy et al 2015). In addition to the fact that Development, v. 9, n. 11, e4239118504, 2020 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v9i11.8504 RDC No.…”

Memorias del XIII Congreso Latinoamericano y del Caribe de Ingeniería Agrícola

“…A diferencia de los métodos de cultivo convencionales, la producción de alimentos orgánicos puede contribuir a mejorar su calidad, a la vez que protege el medio ambiente (Kazimierczak et al, 2015).…”