Tobacco waste in Bosnia and Herzegovina – problem or high-value material?

Duhan se na području Bosne i Hercegovine proizvodi još od prve polovice 17. stoljeća, a sedamdesetih i osamdesetih godina prošlog stoljeća proizvodnja doživljava svoj vrhunac, nakon čega slijedi stagnacija i naglo opadanje proizvodnje. Ipak duhan se na području Bosne i Hercegovine, još uvijek uzgaja kao važna poljoprivredna kultura. Zbog neorganiziranog otkupa kao i nedostatka nadzora od strane države Bosne i Hercegovine nad proizvodnjom duhana, proizvođači svu svoju proizvodnju duhana plasiraju na sivo tržište u obliku poluproizvoda, rezanog duhana, poznatog na ostalim tržištima kao hercegovačka škija, dok na području Posavine postoji organizirani otkup, no niska otkupna cijena, proizvođače stavlja u izuzetno težak položaj. Je li revitalizacija duhana na području Bosne i Hercegovine moguća? Općeprihvaćeno mišljenje je da je revitalizacija nekadašnjeg načina uzgoja duhana zbog promjena preferencija potrošača, tipova cigareta i promjene tehnologije obrade duhana nemoguća. No potrebno je tražiti alternativne načine plasiranja ovih tipova duhana, kao duhana za motanje, te kao autohtonih proizvoda. Jedna od najvažnijih komponenti je i uloga države, s obzirom da duhan podliježe posebnom sustavu trošarina i poreza. U lancu vrijednosti, od poljoprivrednih proizvođača, do prerađivača, važna komponenta je i zbrinjavanje otpada. S obzirom da je duhanski otpad, bogat izvor visokovrijednih komponenti koje su i prikazane u ovom preglednom radu, njegovo iskorištavanje moglo bi dati dodatnu vrijednost i podići nisku otkupnu cijenu duhana, a ujedno riješiti i problem zbrinjavanja ovog opasnog otpada.Tobacco has been produced in Bosnia and Herzegovina since the first half of the 17th century, and during the 70’s and 80’s of the 20th century, the manufacturing has reached its peak. After that period, the production rapidly stagnates. However, tobacco is still being cultivated in many areas of Bosnia and Herzegovina as an important crop. Due to the unorganized buyout as well as the lack of tobacco growing supervision from the authorities, tobacco manufacturers launch their products to grey markets as semi-manufactured products. On the other markets these products are well-known as Herzegovinian škija. In the Posavina region there is an organized buyout, but the buying prices are low and it puts the manufacturers in a difficult position. Is the revitalization of tobacco growing possible? The opinion is that the revitalization of the traditional growing of tobacco is impossible due to the changes in consumers’ preferences, in types of cigarettes and in the manufacturing technology. However, there is a need to search for alternative launching ways for these tobacco sorts, with a focus on rolling tobacco and other local products. The role of the state plays one of the most important components, because there are special excise duties as well as a tax system on tobacco. In this value chain, from growing to the processing of the product, waste management plays an important role. Due to the fact that tobacco waste is a rich source of valuable components which is reviewed in this paper, its usage could present an added value and increase the tobacco prices, and, at the same time, solve the problem of disposing this dangerous waste

Supercritical fluid extraction of soybean oil from the surface of spiked quartz sand - modelling study

The extraction of soybean oil from the surface of spiked quartz sand using supercritical CO2 was investigated. Sand as solid was used; it is not porous material so the internal diffusion does not exist, all the soluble material is in the surface of the particles. Sovová’s model has been used in order to obtain an analytical solution to develop the required extraction yield curves. The model simplifies when the internal diffusion can be neglected. The external mass transfer coefficient was determined by fitting the theoretical extraction curve to experimental data. According to the external mass transfer coefficient, a new Sherwood correlation was developed in terms of the dimensionless groups: Reynolds and Schmidt number. It was found that this correlation give superior results when compared to experimental data

ULTRASOUND-ASSISTED EXTRACTION OF ACTIVE COMPOUNDS FROM COCOA BEAN SHELL

In today\u27s overcrowded world with declining food supplies and the constant struggle against waste accumulation, scientists are increasingly trying to discover new ways to solve these problems. Like many industries, the food industry generates, disposes and accumulates waste thus creating an environmental and economic problem. In this study the one of the green extraction technologies, ultrasound-assisted extraction (UAE), for isolation of bioactive compounds from cocoa bean shell (CBS), a by-product in the chocolate production, was applied. Different temperature (40, 60, 80 °C), extraction time (30, 60, 90 minutes), liquid/solid ratio (10, 30, 50 mL/g) and ultrasound power (30, 50, 70 %) were used to obtain the cocoa bean shell extracts. Six active compounds were detected in the extracts by high performance liquid chromatography with a diode array detector as follows: theobromine (2.077-5.916 mg/g), gallic acid (0.110-1.407 mg/g), caffeine (0.276-0.785 mg/g), catechin (0.033-0.457 mg/g), while the highest obtained concentrations for epicatechin and caffeic acid were 0.100 and 0.527 mg/g of CBS. The highest total phenolic content (TPC) and % scavenging activity measured were 132.897 mgGAE/gextr. and 86.377%. From all investigated parameters, liquid/solid ratio had the greatest influence on the concentrations of obtained compounds. Study proved how UAE is an efficient method for the extraction of bioactive compounds from food by-product - CBS. It should also be emphasized that such application could find the purpose at the industrial level for the discarded waste that still contains valuable compounds, while the enriched extracts could be further used as raw material in other processes

COCOA BEAN SHELL – A PROMISING BY-PRODUCT RICH IN BIOACTIVE COMPOUNDS

Nowadays, when we are increasingly becoming a generation of large quantities of waste materials from various industries, there is an emerged need for certain solutions to suppress waste or make it more economical in some other way. Some by-products from the different food industries are rich in various bioactive compounds which could be utilized in other production processes. Finding the purpose and use of these compounds could be valuable for future generations. One of those by-products is cocoa bean shell (CBS), by-product in the processing of cocoa and its products, that has already proven to contain large amount of different bioactive compounds like theobromine, caffeine, specific phenolic compounds as well as dietary fibres and other valuable compounds which will be reviewed in this paper. CBS could be used in the production of functional products or even in food industry, cosmetic or pharmaceutics due to its high nutritional value what also makes it an economically acceptable raw material

Isoflavone content and antioxidant properties of soybean seeds

The isoflavone content and antioxidant properties of five Croatian soybean seed cultivars from two locations were analysed. The content of total and individual isofavones was determined by high performance liquid chromatography. For determination of antioxidant properties scavenging capacity on DPPHֹ radicals has been applied. The total phenolic content, oil and protein content in soybean cultivars were also determined. Significant differences in the content of individual isoflavones were observed within the soybean cultivars. The total phenol content in soybean cultivars ranged from 87.2 to 216.3 mg GAE/100g of soybean. The total isoflavone content in soybean seeds ranged from 80.7 to 213.6 mg/100g of soybean. The most abundant isoflavone in soybean seeds was genistein. There was statistically significant difference (p < 0.05) among two locations in total and individual isoflavone contents. The highest contents of total isoflavones were found in cultivar “os55-95”. Conversely, cultivars poor in isoflavones also showed low levels of DPPH-radical scavenging activity

ULTRASOUND-ASSISTED EXTRACTION OF ACTIVE COMPOUNDS FROM COCOA BEAN SHELL

In today\u27s overcrowded world with declining food supplies and the constant struggle against waste accumulation, scientists are increasingly trying to discover new ways to solve these problems. Like many industries, the food industry generates, disposes and accumulates waste thus creating an environmental and economic problem. In this study the one of the green extraction technologies, ultrasound-assisted extraction (UAE), for isolation of bioactive compounds from cocoa bean shell (CBS), a by-product in the chocolate production, was applied. Different temperature (40, 60, 80 °C), extraction time (30, 60, 90 minutes), liquid/solid ratio (10, 30, 50 mL/g) and ultrasound power (30, 50, 70 %) were used to obtain the cocoa bean shell extracts. Six active compounds were detected in the extracts by high performance liquid chromatography with a diode array detector as follows: theobromine (2.077-5.916 mg/g), gallic acid (0.110-1.407 mg/g), caffeine (0.276-0.785 mg/g), catechin (0.033-0.457 mg/g), while the highest obtained concentrations for epicatechin and caffeic acid were 0.100 and 0.527 mg/g of CBS. The highest total phenolic content (TPC) and % scavenging activity measured were 132.897 mgGAE/gextr. and 86.377%. From all investigated parameters, liquid/solid ratio had the greatest influence on the concentrations of obtained compounds. Study proved how UAE is an efficient method for the extraction of bioactive compounds from food by-product - CBS. It should also be emphasized that such application could find the purpose at the industrial level for the discarded waste that still contains valuable compounds, while the enriched extracts could be further used as raw material in other processes