Venelina Todorova Popova

University Of Food Technology - Plovdiv | UFTP · Tobacco and tobacco products

Cape gooseberry (Physalis peruviana L.), an exotic fruit gaining popularity in Bulgaria, has been recognized as a highly functional food, but has also the potential to be a resource for the fragrance and cosmetic industries. The main objective of this study was to assess the potential of the resinoid (a type of traditional aromatic products) obtain...

The increased consumption of roll-your-own (RYO) cigarettes and water pipe (hookah), both globally and in Bulgaria, necessitated the current investigation aimed at the assessment of heavy metal levels in the tobacco blends used in those products. The concentrations of Mn, Zn, Cu, Cd, Pb, and Ni were determined by AAS in five brands of RYO tobacco (...

Physalis alkekengi L. (Solanaceae) is encountered in different regions of Bulgaria as a wild growing or ornamental plant. The objective of this work was to characterize the phytochemical composition (macro and micro components) of the leaves and stems of two local phenotypes (PA-SB and PA-NB), with the view of revealing their use potential. The dry...

In recent years there has been an extensive search for nature-based products with functional potential. All structural parts of Physalis alkekengi (bladder cherry), including fruits, pulp, and less-explored parts, such as seeds and peel, can be considered sources of functional macro- and micronutrients, bioactive compounds, such as vitamins, minera...

Physalis alkekengi L. is the only representative of the genus Physalis (Solanaceae) that is native to Bulgaria, found in wild habitats under different climatic and soil conditions. The plant is poisonous, but produces edible fruit, which are a source of functional nutrients—vitamins, phenolic antioxidants, minerals, etc. Therefore, the objective of...

The integrated influence of trade, technological and production fundamentals that shape the market of flue-cured Virginia (FCV) tobacco in Bulgaria objectifies the need of systematic surveys on the quality of the tobacco varieties represented in the country. Therefore, current investigation regarded the quality level of PVH19 and Niki tobacco varie...

The seeds of Cape gooseberry ( Physalis peruviana L.) remain as a by-product from juice production, but they can also be a potential resource of valuable nutrients. The objective of this study was to analyze the phytonutrient composition of the seeds isolated from fruit at two maturity stages unsuitable for regular realization (unripe and under-rip...

Cape gooseberry (Physalis peruviana L.) is a South American fruit with high nutrient content, pleasant taste and antioxidant properties. However, its consumption in some countries is underеvalued. The aim of this study was to determine the nutritional composition of two genotypes of Cape gooseberry fruit produced in Bulgaria (CG-F and CG-P) and to...

The consumption of Cape gooseberry (Physalis peruviana L.) fruit (CG), fresh or processed, is gaining popularity worldwide, due to its nutritional and medicinal benefits. This study was based on the analysis of the lipid fraction of different parts of CG fruit and on further valorization of the resulting CG waste. The content of glyceride oil in CG...

Cape gooseberry (Physalis peruviana L.) is currently cultivated in many regions of the world, and origin-related differences in fruit nutrient composition are observed. Fruit volatile composition is relatively less explored. The objective of this study was to determine (by GC-MS) the volatile composition of the two flavour-related fruit elements, p...

Abstract. The objective of this study was the determination of certain phytochemical indices (cellulose, protein, amino acids, ash, minerals) of the leaves and stems of two Solanum species, S. dulcamara L. and S. nigrum L., collected from their natural habitats in Bulgaria. Both species, naturally occurring in many regions of Bulgaria, are importan...

Physalis alkekengi L. (Solanaceae) is a wild growing plant, native to Bulgaria. The plant produces edible fruit rich in phytonutrients; the fruit and the leaves have been used in Bulgarian and other folk medicines for centuries. The leaves of P. alkekengi can be considered as a promising resource for obtaining extracts rich in bioactive ls is perfo...

The aim of the study was the provision of a technological background for obtaining ethanol extracts with prospective cosmetic application from the leaves of P. alkekengi L. Extraction was carried out in laboratory conditions, as a batch static mode process, with four solvents, 95%, 70%, 50%, and 30% ethanol, respectively. The influence of the main...

The objective of this work was the investigation of the chemical composition of the leaves and stems of two Cape gooseberry (Physalis peruviana L.) genotypes from Bulgaria (CG-SB and CG-NB), with the view of establishing the presence of certain bioactive substances and the prospects for their use as livestock feed or cosmetic ingredients. The leave...

Physalis peruviana L. fruit (Cape gooseberry, CG) is a rich source of phytonutrients, including vitamins, minerals, polyphenols, polyunsaturated fatty acids (FAs), phytosterols, dietetic fibers, and others. The popularity and production areas of CG have been expanding worldwide, thus producing fruit with origin-substantiated differences in their nu...

Physalis peruviana L. (Cape gooseberry) is recognized as a valuable source of nutrients and antioxidants, and is extensively cultivated nowadays in many countries of the tropical and subtropical zone. To the best of our knowledge, there are no previous reports about the antioxidant capacity of P. peruviana fruits originating from Bulgaria. We hypot...

The aim of present study is to examine the performance of Cape gooseberry (Physalis peruviana L.) residues consisting of husks (CGH) and stalks (CGS-1 and CGS-2) in respect to removal of Cr (VI) ions from aqueous solutions. The characterization of the applied biosorbents is conducted by FT-IR analysis. Batch experiments are carried out and the effe...

The genus Nicotiana (Solanaceae) includes over 70 species, with a long history of traditional use; many of them are nowadays used in bioengineering, biosynthesis, molecular biology, and other studies, while common tobacco, N. tabacum L., is one of the most economically important industrial crops worldwide. Although Nicotiana species have been exten...

Nicotiana rustica L. (Aztec tobacco) is the only Nicotiana species, except common tobacco (N. tabacum L.), which is cultivated for tabacco products. The leaves of N. rustica, however, accumulate various specialized metabolites of potential interest. Therefore, the objective of this study was to evaluate certain classes of metabolites (by HPLC and G...

The main objective of this mini-review was to synthesize recent data about the phytochemical composition, the nutritional properties, and the biological and pharmacological activities of a now cosmopolitan genus, Physalis (Solanaceae), being in the focus of intensive research over the last two decades. Six Physalis species with nutritional and phar...

In this study, the thermodynamic characteristics of tobacco seeds were investigated, based on experimental data from equilibrium moisture isotherms at desorption. An empirical exponential relationship was found for the decrease of the net isosteric heat and the differential entropy, based on the Clausius-Clapeyron equation, in response to the incre...

The moisture sorption capacity of tobacco seeds is decisive for their safe long-term storage; therefore, the analysis of the sorption isotherms, in a wide temperature and water activity range, is essential for seed quality maintenance in storage. In this study, the equilibrium sorption isotherms of tobacco ( N. tabacum L.) seeds, “Kroumovgrad 90” v...

N. glutinosa L. is a relatively less studied Nicotiana species (Solanaceae), although there are data about its importance as a model plant in viral control studies, as a gene donor in tobacco hybridization and as a source of agents with insecticidal or fungicidal effects. The biological activities of the species were associated mostly with the pres...

Agricultural and processing activities generate enormous amounts of tobacco waste, and the stalks left after harvesting of the leaves constitute a significant share. The stalks of common tobacco (N. tabacum L.) were considered a promising source for processing and recycling, but very little is known about the properties of the stalks from other Nic...

Physalis peruviana L. fruit contain various functional compounds with health promoting effects. The aim of this study was to investigate the possibility of obtaining reduced sugar jellies from physalis juice with different sugars and sugar substitues.

Tobacco (Nicotiana tabacum L.) aroma is an important attribute of tobacco quality and is influenced by a variety of minor chemical components, including carotenoid degradation products. The objectives of this work were to determine the content of the most important fragrance-shaping carotenoid degradation products in the essential oils (EOs) of the...

Cured tobacco leaves (Nicotiana tabacum L.) from three commercial types – flue cured Virginia, Burley and Oriental, were processed by extraction to obtain the concentrated aromatic product resinoid, which is used in cosmetics and other areas. The objective of the study was to characterize the kinetics of the process of tobacco resinoid extraction b...

The correlations between thermodynamic and kinetic parameters in the extraction of tobacco leaves (solid – liquid system) were determined. The values of the parameters internal molecular diffusion coefficient, activation energy and entropy were used in the calculation procedure presented in the study, with regard to the extraction process of leaves...

Tobacco (Nicotiana tabacum L.) is not just an important industrial crop but also a source of phytochemicals with diverse biological and pharmacological activities. The study aimed at the investigation of the chemical composition and the antimicrobial activity of resinoids obtained from three types of tobacco grown in Bulgaria (Virginia, Burley, and...

: The extraction process of obtaining aromatic products from Oriental-type tobacco leaf was investigated, and the thermodynamic and kinetic parameters of the process were determined. Activation thermodynamic parameters (Gibbs energy, entropy, enthalpy and equilibrium constant) of the transition state were obtained for resinoid and concrete extracti...

Physalis peruviana L. (Cape gooseberry, Inca berry, goldenberry, physalis) is the most commercially important among the species of the genus Physalis (family Solanaceae). Р. peruviana fresh or processed fruits are highly valued for their palatability and the high concentration of bioactive compounds. The other vegetative parts of the plants (calyx,...

Common tobacco (Nicotiana tabacum L.) is the only wide-scale cultivated and economically important species among the over 70 members of genus Nicotiana (family Solanaceae). The rest of the species are less studied, but represent valuable plant sources for obtaining biologically active products. Therefore, the objective of this study was to create t...

This study aims to identify and analyze the non-volatile fraction (chemicals, polyphenols, phenolic acids, flavonoids, and triterpenes) and volatile fraction (essential oil and crude extracted aroma fractions) present in the leaves of “Plovdiv 7” oriental tobacco variety (N. tabacum L.). The results show that the nicotine content in leaves reaches...

The aim of the study was to characterize the polyphenol content in the leaves of different tobacco species (N. alata Link & Otto, N. rustica L., N. tabacum L.), as well as to obtain extracts enriched in phenolic acids and flavonoids, and to evaluate their radical-scavenging activity. The content of chlorogenic acid in the leaves varied from 2.44 ±...

The aim of the study was to identify the chemical composition of leaves, essential oil and extracts of two genotypes of N. alata Link & Otto (jasmine tobacco). HPLC analysis of triterpenes identified only betulin (251.12 μg/g) in the leaves of white flowers genotype, and betulin (284.30 μg/g) and betulinic acid (393.75 μg/g) – in that with pink flo...

Concentrated extraction products (concrete, resinoid, extract with 1,1,1,2-tetrafluoroethane) from the leaves of three Bulgarian types of tobacco (Nicotiana tabacum L.) – flue-cured Virginia, Burley and Oriental, have been obtained. The products, as well as the respective essential oils, have been characterized by their chemical composition (mono-,...

A system has been developed for prognosis of tar and nicotine content in cigarette smoke. The system is based on the established corelations between the chemical composition of smoke (in regard to tar and nicotine) and the factors it depends on (the chemical composition of the tobaccos in the blend, the characteristics of the cigarette, the filters...

Esters of sucrose and oligofructoses with saturated fatty acids (C10 to C18) and the unsaturated 10-undecylenic acid have been obtained. A new method for synthesis with the ultrasonic influence has been developed and applied. Prepared carbohydrate esters have been characterized by measurement of melting point and IR-FT. The antimicrobial activity o...

Liquid aromatic products from tobacco representing Virginia flue-cured variety group (grown in Bulgaria, crop year 2008) have been obtained, through extraction with common and newly introduced solvents (96 % ethyl alcohol, petroleum ether, tetrafluoroethan). The chemical composition of tobacco essential oil and the respective aromatic products has...

Liquid aromatic products from tobacco representing Burley variety group (grown in Bulgaria, crop year 2008) have been obtained, through distillation and extraction with common and newly introduced solvents (96 % ethyl alcohol, petroleum ether, tetrafluoroethan). The chemical composition of tobacco essential oil and the respective aromatic products...

DRACHEV, D., V. NIKOLOVA, V. POPOVA and N. NIKOLOV, 2007. Characterization of the general quality of Kentucky dark fire-cured tobacco grown in Bulgaria. Bulg. J. Agric. Sci., 13: 467-473 Kentucky dark fire-cured tobacco finds its origin and has shaped as an individual tobacco type under the environmental conditions of North America. The type is not...