The Effect of Mineral Fertilization on the Content of Bioactive Compounds in Hemp Seeds and Oil

Abstract

The popularity of hemp cultivation for industrial purposes has been steadily growing for many years. With the addition of products derived from these plants to the Novel Food Catalogue, maintained by the European Commission, a significant increase in interest in hemp food is also expected. The aim of the study was to determine the characteristics of hempseed, oil, and oil cake samples produced from experimental plots grown in different conditions. The research was conducted on the Henola variety, one of the newest and most popular varieties of hemp, recently bred for grain and oil. The content of bioactive compounds in grain and oil has been subjected to detailed chemical analyses in order to determine the effect of fertilization, the method of plant cultivation, and processing conditions on their quantity. The test results and the statistical analysis carried out showed a significant impact of the tested factors on the content of some of the tested bioactive compounds. The obtained results will help in the development of an effective method of cultivation for this hemp variety in order to maximize the content of the desired bioactive compounds per unit of cultivation area.

Biochemical Properties of Bioactive Compounds in the Oil from Polish Varieties of Camelina sativa Cultivated in 2019–2022

“…Very often, when analyzing the physicochemical properties of oil, the parameters related to a specific formulation or variety are not analyzed, but only the species properties. [17][18] Therefore, it is very difficult to compare the obtained own results with the results of other authors. An additional difficulty is the negligible number of publications describing the parameters of winter flax forms -the vast majority of research concerns spring forms.…”

“…To date, there have been few reports in the literature on this innovative method. [17][18][19][20] The total polyphenol content was tested using the Folin-Ciocalteu reagent. A sample (40 μl) of the dissolved in 1 ml of MeOH/H 2 O (1: 1, v/v) mixture of the extract was added to 3 ml of distilled water and 200 μl of Folin-Ciocalteu reagent and mixed.…”

The Content of Antioxidant Compounds and VOCs in Sorghum Grain Grown in Central and Eastern Europe

“…To maintain consistency, both the column and samples were thermostated, with the column set at 30 • C and the test temperature at 10 • C. Solutions were degassed using a Waters device during the analysis. The injection volume for samples was 10 µL, and detection was performed at a wavelength of λ = 445 nm [73,75].…”

“…Elution was performed with a mixture of methanol/acetonitrile/water (85:10:5) at a flow rate of 0.4 mL/min. [73,75].…”