scholarly journals PERSPECTIVES OF THE USE OF PLANT RAW MATERIAL EXTRACTS FOR STORAGE OF TOMATOES

2019 ◽  
Vol 12 (4) ◽  
Author(s):  
A. Dubinina ◽  
T. Letuta ◽  
T. Frolova ◽  
H. Seliutina ◽  
O. Hapontseva

The paper presents the overview data of the diseases and major classes of microorganisms which cause tomato damage after harvesting. Generally accepted effective ways of storage of fruit and vegetable products are considered. These are cold storage and storage in the altered gas environment – regulated and modified (RGE and MGE). It is shown that technologies of storage of fruit and vegetable products with the use of film-forming substances are widely used abroad, and recently they have also been developed in Ukraine. In recent years, prior to the storage, fruits and vegetables have been processed with preparations which have protective properties, and also with antioxidants. Antioxidant compositions on the base of aqueous solutions of santochin, aminophenol, ionol, sorbic and benzoic acids are introduced in the field of fruit and vegetable products storage. There are no studies about the choice of film-forming compositions and antioxidant preparations which take into account the effect of specific microflora of individual fruits and vegetables, as well as the features of their chemical composition and physiological structure. Bacteria and fungi are the two main classes of microorganisms which cause tomatoes damage after harvesting. All diseases have certain manifestations, by which they are identified, and the characteristics of each disease agent, peculiarities of how it spreads and affects fruits are also very specific. Literature analysis has shown that the composition of extracts of ginger, orange peel and garlic bulbs can be an effective universal protection preparation during storage, which covers the whole spectrum of typical tomato diseases. Since the high water-solubility and safety are important characteristics of substances that have direct contact with food products, it is recommended to use aqueous and hydroglyceric alcoholic extracts of plant raw materials when developing the technology of preparation. Further microbiological and toxicological studies of the test samples are needed for determining of working concentrations of extracts and selection of an effective composition.

2021 ◽  
pp. 1-28
Author(s):  
Johanna Tepe ◽  
Marwan Benali ◽  
Dominic Lemken

Abstract Objective: To evaluate the potential of products made out of underutilized fruits and vegetables for closing seasonal nutritional gaps among rural and urban consumers in East Africa. Design: The multinational analysis combines sensory testing and experimental auctions to assess consumers’ perceptions and willingness to pay for six different fruit and vegetable products. Setting: Open markets in rural and urban areas in Kenya, Tanzania, and Uganda. Participants: There were 939 male and female adults who were at least 18 years old. Results: Tobit models for each product show that besides sensory perception, similar sociodemographic characteristics influence consumers’ willingness to pay for these products in all three countries. The products are especially liked among younger, male, and urban consumers. Conclusion: We conclude that there is demand and a market for processed fruit and vegetable products based on indigenous raw material in East Africa. The products, thus, have promising potential to improve nutrition, especially during off-season conditions when access to fresh produce is limited.


2019 ◽  
Vol 2 (4) ◽  
pp. 48-53
Author(s):  
Imomov Jamshidxon Odilovich

This article examines the role and importance of agriculture in the economy of the Republic of Uzbekistan and demonstrates the need to improve the competitiveness of fruit and vegetable products in future economic reforms and the need for implementing a network management system. The SWOT method also shows the prospects and ways to increase the competitiveness of fruits and vegetables in the global agrarian and food markets.


Author(s):  
Yu.I. Agirbov ◽  
◽  
R.R. Mukhametzyanov ◽  
E.V. Britik ◽  
◽  
...  

In 1961-2018 in the world as a whole, the gross harvest of potatoes increased from 290.6 million tons to 368.2 million tons, that is, 1.36 times. Over the same period, the production of vegetables and food melons increased from 197.7 million tons to 1,088.8 million tons (5.51 times), and fruits and berries from 199.9 million tons to 867.8 million tons (4.34 times). In a number of states in 1992-2018 the corresponding increase significantly exceeded the average values for the world as a whole, as a result of which their place in the global ranking increased, and the positions of some traditional producers of potatoes and fruits and vegetables decreased. For example, in terms of gross harvest of potatoes in 1992, Russia was in first place, and Poland was in third, while in 2018 they were in 4th and 9th positions, respectively. In terms of vegetable production, Italy and Japan were displaced from 4th and 5th places, which were taken by Turkey and Nigeria. In terms of gross harvests of fruits and berries, Turkey occupied the fifth position in total world production by 2018, although in 1992 it belonged to Italy. Quantitative and qualitative changes inevitably have a significant impact on both the volume of the world market and the parameters of international trade in potatoes, vegetables and melons, fruits and berries. Processes in foreign economic liberalization and economic integration contributed to an increase in the specialization and concentration of production of relevant plants in countries with more favorable natural and climatic conditions, as well as a gradual increase in demand for potatoes, vegetables and melons, fruits and berries from a number of states, including those that used to meet the needs of their population in large volumes at the expense of their own producers. The Russian Federation is one of the significant players in the world potato and fruit and vegetable market. Despite the increase in gross fruit and vegetable production in recent years, Russia’s positions in the global rating dropped from 7th to 10th place in vegetables and melons, from 20th to 31st place in fruits and berries. As for potatoes, there was a decrease in the volume of its production, as a result, Russia dropped from 1st place in 1992 to 4th place in 2018.


Author(s):  
K.M. Sabirova ◽  
L.V. Kislitsyna ◽  
P.F. Kiku

The estimation of the risk assessment for health of the population from arsenic exposure coming from the basic groups of food raw materials and food, local and imported products. Hygienic assessment given of the content of arsenic in the basic foods from 2011 to 2016 in the Primorsky Territory. Effects are caused basically by contamination of fruit and vegetable products, milk and dairy products, fish and fish products. Risks for health of the population on the basis of the obtained data on average daily doses of entering of an arsenic in an organism at consumption of basic food are defined.


Molecules ◽  
2019 ◽  
Vol 24 (3) ◽  
pp. 417 ◽  
Author(s):  
Maciej Tankiewicz

A modified quick, easy, cheap, efficient, rugged and safe (QuEChERS) method coupled to gas chromatography with electron capture detector (GC-ECD) was developed for simultaneous determination of selected electronegative pesticides in fruits and vegetables with high water content. The chosen compounds are commonly detected in fruit and vegetable crops, and some of their metabolites have even been found in human urine. In addition, some of them are known or suspected carcinogens according to the International Agency for Research of Cancer. Extraction and clean up parameters were optimized, thus the original QuEChERS method was modified to decrease solvent usage, in accordance with ‘green chemistry’ principles. The proposed methodology was validated in terms of selectivity, specificity, linearity, precision and accuracy. The obtained limits of detection (LODs) for all investigated pesticides ranged from 5.6 µg·kg−1 to 15 µg·kg−1 and limits of quantification (LOQs) from 17 µg·kg−1 to 45 µg·kg−1. The obtained data demonstrated the good reproducibility and stability of the procedure in the tested concentration range up to 10 mg·kg−1, with relative standard deviations (RSDs) lower than 10%. Recoveries for spiked pear samples at LOQ level for each pesticide were from 90% to 107% with RSDs lower than 9.6%. The suitability of the developed procedure was tested on various fruit and vegetable samples available on the market at different seasons. The proposed methodology is applicable for detection and monitoring of selected pesticides not only in fruits and vegetables with high water content, but also in samples containing large amounts of pigments and dyes.


2018 ◽  
Vol 20 (90) ◽  
pp. 75-78
Author(s):  
M. I. Fil ◽  
T. O. Koropetska

The widespread introduction of non-traditional and local types of raw materials and the development of new types of products on their basis should be combined with the scientific substantiation of the composition and technology, which ensures the production of high-quality products, strengthening the control of biological and nutritional value, and the safety of new types of confectionery. One of the most important tasks faced by the confectionery industry is the development of new products in order to improve the structure of the range, save on scarce raw materials, reduce sugar content; creation of dietetic products, with a long shelf life. The use of raw materials of local and non-traditional species can contribute to solving this problem. The main source of vitamins, easily digestible carbohydrates, enzymes, fiber, pectin and minerals is fresh fruits and vegetables. Flour confectionery products, due to the high content of carbohydrates, fats and proteins, are high-calorie, well-digestible products with a pleasant taste and attractive appearance. Out of all the flour semi-finished products, the sponge cake is the bloated and softer. A well-baked cake is handy for processing; it has a smooth, thin crust; porous, elastic structure of the pulp – during compression is easily compressed, after removal of effort restores the old form. In the production of many foods, supplements that regulate the consistency and form the texture of food products are used. The structure of the sponge cake product is formed, mainly, at the stage of paste formation. The sponge cake is a poorly structured system with saturated air. The quality of the semi-finished product, above all, will depend on the quality of the resulting dough, which is substantially affected by the raw material. We have developed a recipe for a sponge dough, semi-finished product containing a pumpkin powder containing a significant amount of pectins, fiber, etc. In the structure of a sponge semi-finished product with pumpkin powder, thanks to the contents of polycarcids, which are merged with proteins bridges are formed. Osmotic swelling occurs as a result of the diffusion of water molecules inside the protein molecule, causing swelling of proteins. Microscopy of the structure of the biscuit semi-finished product was investigated in Slovakia (SPU).


2020 ◽  
Author(s):  
A.K. Archana ◽  
P.R. Geetha Lekshmi

Fruits and vegetables are considered as protective foods and received importance in healthy diet plan. Postharvest loss in quality as well as quantity of fruits and vegetables is huge due to seasonal production, high perishability, shorter shelf life and preservation through processing is one of the best methods to minimise the loss. Thermal methods are more popular and these traditional methods of fruit and vegetable preservation often affect the quality of final products in terms of color, taste, flavor and nutritional qualities. Demand for fruit and vegetable products with ‘fresh like’ qualities are increasing and there is a shift of thermal methods of processing to non-thermal methods to improve the quality of processed products. Several non-thermal methods of processing are developed in order to meet the consumer demand of which high pressure processing has proven to be extremely valuable for fruit and vegetable products. It is an emerging technology in juice and beverage sector which allow fruit and vegetable juices as well as smoothies to store safely for a longer time with fresh taste while preserving its nutritional quality. 


2018 ◽  
pp. 84-89
Author(s):  
S. V. Glazkov ◽  
S. V. Koptsev ◽  
N. A. Lesnikova ◽  
V. V. Bogdanova ◽  
T. K. Volodarskaya

The article analyzes modern technologies for storing fruit and vegetable products and presents possible options for their modernization. From this perspective, the improvement of canning technology using non-traditional methods of processing plant raw materials is an urgent task, the solution of which will allow preserving fruit and vegetable products, reduce the amount of waste and reduce the impact of vegetable processing plants on natural water bodies. Fruits and vegetables are perishable products and require special storage conditions from the moment they are available for sale to purchase by consumers. Keeping them fresh for as long as possible is quite a challenge, as some plants are able to continue maturing even after packaging and produce ethylene, which initiates certain changes in texture and color, tissue degradation. The authors pay special attention to the aspects of innovative technologies in the creation of edible films and coatings, which are currently the only type of biodegradable polymer packaging that does not require individual collection and special conditions of disposal. This is their main difference from traditional biodegradable plastics, which were originally proposed as an alternative to synthetic polymeric materials, and all were convinced that their creation once and for all will solve the problem of waste polymer packaging, which today threatens to become a global environmental disaster. At the same time, they are always more expensive than conventional plastics, in many cases can not be subjected to joint recycling; being in the deep layers of the landfill, they emit greenhouse gas methane. In addition, the raw materials for biodegradable plastics are provided by the same soil and water resources on which food is grown today (except for a very small amount of plastics produced from agricultural waste), and therefore their raw material base will always be limited. Recommendations are formulated on the organization of effective conservation of plant raw materials, intended for further processing or sale in retail and wholesale trade networks.


Author(s):  
Ruslan Maratbekovich Iskakov ◽  
Assel Maratbekovna Iskakova ◽  
Murat Zhusypbekovich Nurushev ◽  
Altyngul Kumashevna Khaimuldinova ◽  
Nurlan Kazhkenovich Karbayev

The aim of this article was to study degreasing of raw materials raw fish bone waste and animal waste. A new method was developed, aimed at intensive extraction of fat with an additional absorber- de-limonene, placed in water during high-temperature cooking of raw materials of animal origin. De-limonene is a widespread terpene hydrocarbon, and a primary component of orange peel oil (constitutes up to 80–90%). Degreasing with the inclusion of de-limonene increases the degree of hydrolysis of collagen from animal raw materials, which intensifies the extraction of fat from the processed raw materials. High-temperature cooking promotes the breakdown of triglycerides into free fatty acids, which further break down into low molecular weight products. At the end of the heat the temperature of the heating plates is 70-90 ° C, the pressure inside the boiler is 1.6,-2.4 kPa, the duration is 60-100 minutes treatment of the raw material, a two-phase system was obtained: dry fat greaves and fat. Fat was sucked off by pumps connected to digesters, and greasy greaves were sent for degreasing by pressing. The method produced broth, fat, and feed.


Molecules ◽  
2020 ◽  
Vol 25 (6) ◽  
pp. 1466
Author(s):  
Ruojie Zhang ◽  
Zipei Zhang ◽  
Ruyi Li ◽  
Yunbing Tan ◽  
Shanshan Lv ◽  
...  

There is interest in incorporating nanoemulsions into certain foods and beverages, including dips, dressings, drinks, spreads, and sauces, due to their potentially beneficial attributes. In particular, excipient nanoemulsions can enhance the bioavailability of nutraceuticals in fruit- and vegetable-containing products consumed with them. There is, however, potential for them to also raise the bioavailability of undesirable substances found in these products, such as pesticides. In this research, we studied the impact of excipient nanoemulsions on the bioaccessibility of pesticide-treated tomatoes. We hypothesized that the propensity for nanoemulsions to raise pesticide bioaccessibility would depend on the polarity of the pesticide molecules. Bendiocarb, parathion, and chlorpyrifos were therefore selected because they have Log P values of 1.7, 3.8, and 5.3, respectively. Nanoemulsions with different oil contents (0%, 4%, and 8%) were fabricated to study their impact on pesticide uptake. In the absence of oil, the bioaccessibility increased with increasing pesticide polarity (decreasing Log P): bendiocarb (92.9%) > parathion (16.4%) > chlorpyrifos (2.8%). Bendiocarb bioaccessibility did not depend on the oil content of the nanoemulsions, which was attributed to its relatively high water-solubility. Conversely, the bioaccessibility of the more hydrophobic pesticides (parathion and chlorpyrifos) increased with increasing oil content. For instance, for chlorpyrifos, the bioaccessibility was 2.8%, 47.0%, and 70.7% at 0%, 4%, and 8% oil content, respectively. Our findings have repercussions for the utilization of nanoemulsions as excipient foods in products that may have high levels of undesirable non-polar substances, such as pesticides.


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