Influence of the Regime Parameters of Distillation on the Distribution of Volatile Components by Fractions in the Production of Cornel Distillate

2021 ◽  
pp. 19-23
Author(s):  
Елена Васильевна Дубинина ◽  
Людмила Николаевна Крикунова ◽  
Владимир Александрович Трофимченко ◽  
Кантемир Витальевич Небежев

На качество фруктовых дистиллятов оказывают существенное влияние различные физико-химические процессы, проходящие в дистилляционной установке под действием высокой температуры. В зависимости от особенностей биохимического состава для каждого вида сырья необходимо подбирать конкретные режимы дистилляции, обеспечивающие получение дистиллята с высокими органолептическими и физико-химическими характеристиками. В связи с этим цель работы состояла в исследовании влияния режимных параметров фракционированной дистилляции сброженной кизиловой мезги на распределение летучих компонентов по фракциям. В качестве объектов исследования в работе использовали фракции, полученные в процессе дистилляции сброженной кизиловой мезги на установке прямой сгонки «Kothe Distillationstechnik» (Германия). Экспериментально установлено, что повышение скорости при дистилляции сброженной кизиловой мезги приводит к увеличению объема отбираемой головной фракции, при одновременном снижении ее крепости. Показано, что изменение скорости дистилляции приводит к изменению характера перехода основных летучих компонентов в дистиллят и распределения их по фракциям. Изучена динамика перехода летучих компонентов в дистиллят при различных режимах работы дистилляционной установки - без задержки флегмы (обычный режим) и с задержкой флегмы на нижней тарелке укрепляющей колонны. Проведенные исследования показали, что при условии медленной дистилляции со скоростью не более 5,5 см3/мин в средние фракции переходит 82-85% компонентов энантового эфира, а содержание ацетальдегида снижается на 10-12% по сравнению с быстрой дистилляцией. Показано, что применение задержки флегмы на нижней тарелке укрепляющей колонны дистилляционной установки также способствует снижению перехода в кизиловый дистиллят ацетальдегида и этилацетата, и к сокращению потерь компонентов энантового эфира с головной и хвостовой фракциями. The quality of fruit distillates is significantly affected by various physical and chemical processes that take place in the distillation unit under the influence of high temperature. Depending on the characteristics of the biochemical composition for each type of raw material, it is necessary to select specific distillation modes that ensure the production of distillate with high organoleptic and physico-chemical characteristics. In this regard, the aim of the work was to study the influence of the regime parameters of fractionated distillation of fermented Cornel pulp on the distribution of volatile components by fractions. The fractions obtained during the distillation of fermented Cornel pulp at the direct distillation unit «Kothe Distillationstechnik» (Germany), were used as the objects of research. It is experimentally established that an increase in the speed during distillation of fermented Cornel pulp leads to an increase in the volume of the selected head fraction, while reducing its strength. It is shown that a change in the distillation rate leads to a change in the nature of the transition of the main volatile components to the distillate and their distribution by fractions. The dynamics of the transition of volatile components to distillate under different operating modes of the distillation unit - without phlegm delay (normal mode) and with phlegm delay on the lower plate of the reinforcing column is studied. Studies have shown that under the condition of slow distillation at a speed of no more than 5.5 cm3/min, 82-85% of the enantium ether components pass into the medium fractions, and the content of acetaldehyde decreases by 10-12% compared to fast distillation. It is shown that the use of phlegm delay on the lower plate of the strengthening column of the distillation unit also helps to reduce the transition to the Cornel distillate of acetaldehyde and ethyl acetate, and to reduce the loss of the components of the enantium ether with the head and tail fractions.

2021 ◽  
pp. 20-25
Author(s):  
Михаил Николаевич Елисеев ◽  
Федор Андреевич Неверов ◽  
Ирина Николаевна Грибкова

Статья посвящена вопросу качества ирландских виски, представленных в отечественной розничной сети. Освещен вопрос связи органических соединений зернового сырья, применяемого в технологии виски, и вкусового профиля готовых алкогольных напитков. Приведены результаты исследования органолептических показателей готовых виски, их вкусовые профили, описанные с помощью стандартных дескрипторов для данного вида продукции, а также физико-химические показатели. Выявлены образцы продукции, которые обладают высокими вкусо-ароматическими характеристиками, и это связано с содержанием летучих компонентов образцов. Исследование летучих соединений готовых виски показало их соответствие требованиям нормативной документации Российской Федерации. Анализ полученных количественных характеристик в доверительном интервале р ≥ 0,95 позволил выявить соотношения 3-метилбутанол : 1-пропанол : изобутанол : 2-метилбутанол в качестве маркера принадлежности виски к определенному сроку выдержки - от 3 до 8 лет. Данный факт позволит разработать методы для определения аутентичности и фальсификации виски при проведении дальнейших исследований. The article is devoted to the issue of the quality of Irish whiskey presented in the domestic retail network. The issue of the relationship between grain raw material organic compounds used in whiskey technology and the taste profile of finished alcoholic beverages is discussed. The study results of finished whiskey organoleptic indicators, their taste profiles, described using standard descriptors for this type of product, as well as physical and chemical indicators are presented. The product samples have been identified that have high taste and aroma characteristics and this is due to the samples volatile components content. The finished whiskey volatile compound study showed their compliance with the requirements of the regulatory documents of the Russian Federation. The analysis of the obtained quantitative characteristics in the confidence interval of p ≥ 0.95 made it possible to reveal the ratio of 3-methylbutanol : 1-propanol : isobutanol : 2-methylbutanol as a marker of whiskey belonging to a certain aging period - from 3 to 8 years. This fact will allow the development of methods for determining the authenticity and falsification of whiskey in further research.


2019 ◽  
Vol 777 (12) ◽  
pp. 37-42
Author(s):  
G.Yu. SHAGIGALIN ◽  
◽  
P.A. FEDOROV ◽  
L.N. LOMAKINA ◽  
◽  
...  

1989 ◽  
Vol 54 (1) ◽  
pp. 117-135
Author(s):  
Oldřich Pytela ◽  
Vítězslav Zima

The method of conjugate deviations based on the regression analysis has been suggested for construction of a new nucleophilicity scale. This method has been applied to a set of 28 nucleophiles participating in 47 physical and chemical processes described in literature. The two-parameter nucleophilicity scale obtained represents-in the parameter denoted as ND-the general tendency to form a bond to an electrophile predominantly on the basis of the orbital interaction and-in the parameter denoted as PD-the ability to interact with a centre similar to the proton (basicity). The linear correlation equation involving the ND, PD parameters and the charge appears to be distinctly better than the most significant relations used. The correlation dependences have the physico-chemical meaning. From the position of individual nucleophiles in the space of the ND and PD parameters, some general conclusions have been derived about the factors governing the reactivity of nucleophiles.


2015 ◽  
Vol 3 (1) ◽  
pp. 20-25 ◽  
Author(s):  
N. Padmaja ◽  
S. John Don Bosco ◽  
J. Sudhakara Rao

The physical and chemical characteristics of the fruit have immense significance as they ultimately affect the quality of processed productsprepared from them. Over ripening of Sapota (Manilkara zapota) fruits at the post-harvest stage usually results in dramatic decline in quality.In the present study, physico chemical analysis (which includes Weight loss, Colour, Texture, TSS, pH, TA and Ascorbic acid content) ofedible Aloe vera gel coated Sapota fruits packed in LDPE and stored at 15 ± 2? were studied at regular intervals of 5 days i.e., 0th,5th, 10th,15thand 20th days. The dip treatment of Aloe vera gel coating 1:2, 7 minutes had best retained the physico chemical characteristics than the othertreatments performed and was found to be the most effective treatment in maintaining the fruit quality attributes along with the shelf lifeextension of about 20 days.DOI: http://dx.doi.org/10.3126/ijasbt.v3i1.11703 Int J Appl Sci Biotechnol, Vol. 3(1): 20-25      


2007 ◽  
Vol 13 (6) ◽  
pp. 485-495 ◽  
Author(s):  
M.R. Ramirez ◽  
R. Cava

The effect of raw material characteristics (longissimus dorsi and biceps femoris) on dry-cured loin and ham quality from three different Iberian · Duroc genotypes was studied: GEN1: ♂ Iberian · ♀ Duroc1, GEN2: ♂ Duroc1 · ♀ Iberian; GEN3: ♂ Duroc2 · ♀ Iberian. GEN1 and GEN2 are reciprocal crosses, while the difference between GEN2 and GEN3 is the Duroc sire line. The line Duroc1 (DU1) was selected for the manufacture of dry-cured meat products, whereas the line Duroc2 (DU2) was selected for meat production with low carcass fat. Raw material and dry-cured meat products did not differ between reciprocal crosses (GEN1 vs. GEN2). However, the genotype of the Duroc sire line affected the quality of meat and dry-cured meat products. GEN1 and GEN2 had higher adipogenic nature and higher postmortem pH than GEN3, and as a result, these dry-cured meat products had better instrumental and sensory quality than those from GEN3. By contrast, meat from GEN3 had lower pH, fat content, and oxidative stability which decreased the quality of dry-cured meat products. Therefore, there was a close connection between raw material and dry-cured meat products quality as it was affected by characteristics related to the genotype such as the adipogenic character and meat quality traits associated with pH.


2021 ◽  
pp. 10-24
Author(s):  
C. R. Abah ◽  
C. N. Ishiwu ◽  
J. E. Obiegbuna ◽  
E. F. Okpalanma ◽  
C. S. Anarado

Quality cassava(Manihotesculentus, Crantz) flour is often influenced by process variables such as slice weight and soaking time which may affect its nutritional quality. In this study, the effect of process variables (slice weight and soaking time) on quality of cassava flour was carried out. Cassava root was peeled, washed and cut into varied sizes (25.86 - 54.14 g) and soaked at varied time (7.03 - 40.97 h). The proximate composition, physical and chemical properties of the flour were carried out using standard methods. The result in our findings showed that slice weight and soaking time had significant increase (p<0.05) on the proximate and physico-chemical properties of the flour.The amylose and amylopectin content of the flour increased with increasing soaking time while the hydrogen cyanide content decreased with increase in soaking time. Overall, the quality cassava flour displayed desirable properties for its incorporation into baked goods.


2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Xiaomo Yu ◽  
Junke Ye ◽  
Jing Hu ◽  
Xiaoping Liao ◽  
Jianbo Gao

Cane sugar production is an important industrial process. One of the most important steps in cane sugar production is the clarification process, which provides high-quality, concentrated sugar syrup crystal for further processing. To gain fundamental understanding of the physical and chemical processes associated with the clarification process and help design better approaches to improve the clarification of the mixed juice, we explore the fractal behavior of the variables pertinent to the clarification process. We show that the major variables in this key process all show persistent long-range correlations, for time scales up to at least a few days. Persistent long-range correlations amount to unilateral deviations from a preset target. This means that when the process is in a desired mode such that the target variables, color of the produced sugar and its clarity degree, both satisfy preset conditions, they will remain so for a long period of time. However, adversity could happen, in the sense that when they do not satisfy the requirements, the adverse situation may last quite long. These findings have to be explicitly accounted for when designing active controlling strategies to improve the quality of the produced sugar.


2019 ◽  
Vol 10 (3) ◽  
pp. 207-218
Author(s):  
Lidiane Schmalfuss Valadão ◽  
Caroline Dos Santos Duarte ◽  
Pedro José Sanches Filho

The peach stone is considered an agroindustrial residue originating from the industrial process of peach in halves in syrup. It does not have an adequate destination, its final disposal is incorrect and may cause contamination in the environmental compartments. In this way, the burning of this raw material as biomass enables its reuse, besides adding value to the residue. Among the processes used for the application of this residue is the carbonization process, which allows to obtain co-products with higher added value, such as pyroligneous liquid, which represents a fraction of organic compounds condensed from the smoke emitted during carbonization. The quality of the liquid depends on the process conditions and the biomass used. Therefore, the objective of this study was to characterize the sample of pyrolignous liquid obtained from the carbonization of the peach stone, on an industrial scale, qualitative and semi quantitative. Preliminary characterization (pH, conductivity, color, density and contents of tar, organic matter and acidity) and a chemical characterization by gas chromatography coupled to mass spectrometry (GC-MS) were performed. The liquid presented satisfactory results for the physico-chemical evaluations. Regarding the qualitative determination, it was possible to identify 49 compounds. Highlighting the phenols, with 44.90% of the number of compounds, mainly methoxyphenols. These are compounds with significant added value and industrial importance, indicating their use as raw material in the production of polymer resins, among other purposes.


AGROINTEK ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 57-66
Author(s):  
Kukuk Yudiono

The main problem encountered in the production of tempeh was its raw material, namely soybeans dominated by soybean supplied from other countries, mainly dominated by imported products from the United States. The majority of tempeh craftsmen's perception is that imported soybeans are superior to local soybeans. This is of course unfortunate because it will further aggravate the competitiveness of local soybeans. This research was conducted to explore the advantages of local soybeans, especially from the physico-chemical aspects of imported soybeans. The research objective was to map the physico-chemical properties of local and imported soybeans as raw material for tempeh. One factor trial design was used, with soybean varieties (4 local and 1 imported) as a factor. Variables observed included: antioxidant, bulk density, swelling power, plant quality, seed size, WAI, WSI, protein, yield, and density. The results obtained: 1) antioxidant : Devon 1 imported soybeans, 2) bulk density: fourth of local soybeans = imported soybeans, 3) swelling power : Argomulyo = imported soybeans, 4) quality of  cooking: fourth of  local soybeans imported soybeans, 5) seed size : Grobogan and Argomulyo imports, 6) WAI:  Argomulyo and Demas imported soybeans, 7) WSI: Devon = imported soybeans, 8) protein: Grobogan and Detam imported soybeans, 9) density:  Bromo imported soybeans, 10) extraction value: Anjasmoro, Argomulyo, and Grobogan imported soybeans.


Author(s):  
Winarti Winarti ◽  
Arman Harahap

Macrozoobenthos used as a bioindicator of the waters, this happens because of the nature of the benthos which has mpergerakan low so it got a lot of influence from the environment. This study aims to determine the condition of the river Kundur with a view the community structure of macrozoobenthos which include: species composition, abundance, diversity, uniformity and dominance as well as the physical and chemical parameters of water as a paremeter supporters. Based on the results of observations, macrozoobenthos were found during the study in the river Kundur consists of 3 phylum, 4 classes, 17 family with 11 species. The composition of the class of macrozoobenthos in the whole of the observation station consists of a Gastropod (37%), Insecta (23%), Malacostraca (20%), Polychaeta (10%) dan Malacostraca (20%). The value of an abundance ranged from 325,7 - 3309,6 ind/m3. With the value of the total abundance at Station I which is equal to 3690,1 ind/m3, Station II 3723,1 ind/m3, Station III 3692,3 ind/m3 can be categorized diversity are light polluted with the value of the index of uniformity (E) that describes the spread of the individual tends to be uniform or relatively the same. While the condition of the physical-chemical parameters and the substrate bottom of the river Kundur in general has a range of relatively homogeneous, spread evenly throughout the observation stations and still be able to support life macrozoobenthos. To the results of measurements of the parameters of physico-chemical water and substrate in the river kundur in general has a range of relatively homogeneous in the whole observation stations and still be able to support the life of the macrozoobenthos.


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