The control of the qualitative and quantitative composi-tion of vitamins and tocopherols of various types of vegetable oils

Использование растительных масел в рационе человека необходимо для удовлетворения энергетической потребности организма и регулирования биологических процессов. В настоящей работе представлен качественный и количественный состав витаминов и токоферолов различных видов растительных масел, полученных холодным отжимом из выращенных в нашей стране расторопши, горчицы, подсолнечника, рыжика, рапса. Проведен сравнительный анализ литературных источников о наличии витаминов и токоферолов в различных растительных маслах. Количественный и качественный витаминный состав для одного и того же вида масла, по данным разных авторов, варьируется в достаточно широком диапазоне. В ходе исследования изучен витаминный состав пяти растительных масел. Результаты свидетельствуют, что наибольшей витаминной активностью обладают масла рыжиковое, расторопши и горчичное. Установлено наличие витамина А в маслах: рыжиковом (27,15±0,002 мкг%), расторопши (19,07±0,02 мкг%), горчичном (24,77±0,02 мкг%). Витамины В и В присутствуют в маслах горчичном, рыжиковом и расторопши; витамин В определен в горчичном и рыжиковом, В - в рыжиковом и расторопши. В маслах горчичном и расторопши присутствует витамин В. Наиболее богаты витамином Е масла рыжиковое (52,8±0,02 мг%), подсолнечное (48,3±0,02 мг%), расторопши (47,12±0,02 мг%). Витамин К и токоферолы определены во всех растительных маслах. Присутствие b-каротина обнаружено в рыжиковом (1,237±0,004 мг%), расторопши (0,812±0,002 мг%), подсолнечном (0,22±0,02 мг%) и горчичном (0,148±0,002 мг%) маслах. Анализируемые масла холодного отжима можно рассматривать как ценный источник при проектировании новых многоцелевых продуктов или побочных продуктов для промышленного, косметического и фармацевтического использования. The use of vegetable oils in the human diet is necessary to meet the energy needs of the body and regulate biological processes. This work presents the qualitative and quantitative composition of vitamins and tocopherols of various types of vegetable oils obtained by cold pressing from silybum marianum, mustard, sunflower, camelina, rapeseed grown in our country. A comparative analysis of the literature on the presence of vitamins and tocopherols in various vegetable oils has been carried out. The quantitative and qualitative vitamin composition for the same type of oil, according to different authors, varies in a wide range. During the study, the vitamin composition of five vegetable oils was studied. The results indicate that the following oils have the highest vitamin activity: camelina, silybum marianum and mustard. The presence of vitamin A was found in oils: camelina (27.15±0.002 μg%), silybum marianum (19.07±0.02 μg%), mustard (24.77±0.02 μg%). Vitamins B and B are present in mustard, camelina and silybum marianum oils; vitamin B is found in mustard and camelina; B in camelina and silybum marianum. Mustard and silybum marianum oils contain vitamin B. The richest in vitamin E are camelina (52.8±0.02 mg%), sunflower (48.3±0.02 mg%), silybum marianum (47.12±0.02 mg%). Vitamin K and tocopherols are found in all vegetable oils. The presence of b-carotene was found in camelina (1.237±0.004 mg%), silybum marianum (0.812±0.002 mg%), sunflower (0.22±0.02 mg%) and mustard (0.148±0.002 mg%) oils. The analyzed cold-pressed oils can be considered as a valuable resource when designing new multipurpose products or by-products for industrial, cosmetic and pharmaceutical applications.

The spectrophotometric determination of A-vitamin activity of carotenoid-containing raw material

Carotenoids are of interest as precursors of vitamin A, which has a wide range of pharmacological effects — antioxidant, immunomodulatory, participating in photoreception, etc. The aim of the research was to develop a technique for the spectrophotometric determination of the A-vitamin activity of carotenoids-rich medicinal plant raw materials (MPRM). The objects of research were the traditional sources of carotenoids — sea buckthorn, carrot, pumpkin and wild rose. A method is proposed for determining the content of individual carotenoids in MPRM by optical density at wavelengths corresponding to the characteristic peaks of α-carotene, β-carotene and lycopene. It has been shown that it is preferable to use isopropyl alcohol as the most effective solvent. Taking into account the content of specific carotenoids makes it possible to determine the A-vitamin activity of the sum of carotenoids extracted from plant materials, and, accordingly, to increase the efficiency of the use of herbal preparations and biologically active additives for health improvement.

QUALITY AND QUANTITATIVE COMPOSITION OF SUNFLOWER OIL DEODORIZATION DISTILLATE

The composition of the sunflower oil deodorization distillate has been investigated. 18 acidic components have been identified, more than 40% of the composition of the studied sample falls on linoleic acid with F-vitamin activity. More than 30 components of neutral nature have been found that are of interest as bioactive compounds. Of these, 10 are phytosterols, 14 are triterpene alcohols, 5 are tocopherols. The diterpene hydrocarbons, alcohols and acids of the kauran structure found in the composition of deodorization distillate indicate that the original sunflower oil was native, since it is known that kauran derivatives are a chemotaxonomic marker of many plants of the compositae family, including sunflower. In addition to the above compounds, hydrocarbons (more than a quarter of the unsaponifiable matter), both aliphatic and diterpenic, in the studied sample, was found. Aliphatic components are predominantly unsaturated, which may indicate their artifact origin, i.e. they are the products of the dehydration of aliphatic alcohols. Phytadiene isomers, products of phytol dehydration and isomerization, have been found. The data obtained indicate the prospects for the use of oil deodorization distillate as a source of bioactive substances, cosmetic ingredients and pharmaceutical components.

Formation of technological and commodity qualities of sour cherry fruits in the conditions of the South of Russia

There are presented the results of comparative evaluation of sour cherry varieties of different ecological-geographical and genetic origin on the main biochemical parameters of fruits, condioning the taste of the fruit: dry substances, sugars, vitamins, anthocyanins. It was revealed the dynamics of content of biochemical parameters in fresh fruits depending on weather conditions of year, stresses of various type and biological peculiarities of cherry varieties. According to the obtained data in the conditions of southern horticulture (the Kuban zone of fruit growing of Krasnodar Territory) in the fruits of sour cherry varieties on average 14.5-17.0 % of dry substances, 6.4-8.4 % of sugars, 7.0-8.0 mg/100 g of vitamin C, 117.5-160.1 mg/100 g of substances with P-vitamin activity, 207.8-275.3 mg/100 g of anthocyanins accumulate. It was determined that fruits of sour cherry-sweet cherry hybrids and varieties of local breeding are characterized by higher content of biochemical parameters. It was established that the influence of a number of stresses – high positive temperatures, long periods of drought, surplus of rainfall during the period of fruits formation – causes an increase or decrease in content of some biochemical parameters, a decrease in weight, and deterioration in taste. It was determined that domestic varieties Kazachka, Kirina, Shalun`ya and Igrushka are distinguished by a high content of soluble solids (16.0-17.9 %) and carbohydrates (8.4-9.1 %). Cherry varieties Vstrecha, Alexa and Nord Star are characterized by an increased vitamin C content (8.3-9.7 mg/100); cherry varieties Kirina, Kazachka, Nefris, Vstrecha and the Shalun`ya – by a high content of anthocyans (247,0-333,8 mg/100) and P–vitamin activity (187.0-201.0 mg/100); varieties Alexa, Kirina, Shalun`ya and Igrushka are characterized by relatively large fruits (5.5-6.5 g). According to the optimal and harmonious combination of biochemical parameters, high taste (tasting score 4.6-4.8 points) and to the commodity qualities of fruits, sour cherry varieties Kirina, Alexa, Shalun`ya and Igrushka were recommended for laying raw plantings and production of fresh fruits and various types of processing in the conditions of southern horticulture.

Challenges to Quantify Total Vitamin Activity: How to Combine the Contribution of Diverse Vitamers?

ABSTRACT This state-of-the-art review aims to highlight the challenges in quantifying vitamin activity in foods that contain several vitamers of a group, using as examples the fat-soluble vitamins A and D as well as the water-soluble folate. The absorption, metabolism, and physiology of these examples are described along with the current analytical methodology, with an emphasis on approaches to standardization. Moreover, the major food sources for the vitamins are numerated. The article focuses particularly on outlining the so-called SLAMENGHI factors influencing a vitamer's’ ability to act as a vitamin, that is, molecular species, linkage, amount, matrix, effectors of absorption, nutrition status, genetics, host-related factors, and the interaction of these. After summarizing the current approaches to estimating the total content of each vitamin group, the review concludes by outlining the research gaps and future perspectives in vitamin analysis. There are no standardized methods for the quantification of the vitamers of vitamin A, vitamin D, and folate in foods. For folate and β-carotene, a difference in vitamer activity between foods and supplements has been confirmed, whereas no difference has been observed for vitamin D. For differences in vitamer activity between provitamin A carotenoids and retinol, and between 25-hydroxyvitamin D and vitamin D, international consensus is lacking. The challenges facing each of the specific vitamin communities are the gaps in knowledge about bioaccessibility and bioavailability for each of the various vitamers. The differences between the vitamins make it difficult to formulate a common strategy for assessing the quantitative differences between the vitamers. In the future, optimized stationary digestive models and the more advanced dynamic digestive models combined with in vitro models for bioavailability could more closely resemble in vivo results. New knowledge will enable us to transfer nutrient recommendations into improved dietary advice to increase public health throughout the human life cycle.