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Quality Assessment of Young Sparkling Wines of Crimean Indigenous Grape Varieties 克里米亚本土葡萄品种新酿起泡葡萄酒的质量评估
Q3 Economics, Econometrics and Finance Pub Date : 2024-03-28 DOI: 10.21603/2074-9414-2024-1-2483
I. Lutkov, Alexander Makarov, N. Shmigelskaya
Most domestic sparkling wines are made of traditional champagne grape varieties. However, indigenous Crimean cultivars could increase the output of high-quality original beverages if a proper technology was introduced. This research featured young sparkling wines from Crimean grape varieties, i.e., Soldaya, Shabash, Kokur Beliy, Sary Pandas, Kefesiya, Dzhevat Kara, and Ekim Kara. Organic acids, sugars, glycerin, phenolic substances, and ethanol were determined by high performance liquid chromatography; the content of amine nitrogen was measured by formalin titration. The optical profile of the wine samples was subjected to the colorimetric method while their foamy properties were studied by bubbling the samples in a measuring cylinder. The sparkling properties depended on the rate of CO2 desorption; the volumetric method made it possible to define the CO2 content; the viscosity was measured using a viscometer. The sensory assessment followed State Standard 32051-2013, ISO 5492:2008, and ISO 11035:1994. The samples of Kokur Beliy, Sary Pandas, and Soldaya received high tasting ratings (≥ 9.0 points), as did the red variety of Kefesiya (8.95 points). They demonstrated a clear typical aroma and a harmonious taste, as well as good foamy and sparkling properties. The maximal foam volume correlated with amine nitrogen (r = 0.762) while the sparkling properties correlated with the mass fraction of bound CO2 (r = 0.977). The red sparkling wine from the Kefesiya variety had a dark garnet color due to its high anthocyanins. It also contained quercetin and glycoside, which are known for their biological (P-vitamin) activity and powerful antioxidant properties. The early low-sugar (< 18 g/100 cm3) varieties of Dzhevat Kara and Ekim Kara had the same acidity but demonstrated a less diverse phenolic profile and were paler in color. In this research, the indigenous Crimean grape cultivars of Kokur Beliy, Sary Pandas, Soldaya, and Kefesia showed good prospects for young sparkling wines. Other varieties needed special technologies to preserve their typical properties and the aroma/taste balance. The new technology makes it possible to obtain unique high-quality products right in the harvest year, thus increasing the range and volume of sparkling wine production.
大多数国内起泡葡萄酒都是用传统的香槟葡萄品种酿造的。然而,如果引进适当的技术,克里米亚本土品种可以提高优质原酒的产量。这项研究的重点是克里米亚葡萄品种(即 Soldaya、Shabash、Kokur Beliy、Sary Pandas、Kefesiya、Dzhevat Kara 和 Ekim Kara)酿制的新起泡葡萄酒。有机酸、糖、甘油、酚类物质和乙醇采用高效液相色谱法测定;胺氮含量采用福尔马林滴定法测定。葡萄酒样品的光学特征采用了比色法,而泡沫特性则是通过将样品放入量筒中起泡来研究的。起泡特性取决于二氧化碳的解吸速度;体积计量法可以确定二氧化碳的含量;粘度是用粘度计测量的。感官评估遵循国家标准 32051-2013、ISO 5492:2008 和 ISO 11035:1994。Kokur Beliy、Sary Pandas 和 Soldaya 样品的品尝评分较高(≥ 9.0 分),红色品种 Kefesiya 也是如此(8.95 分)。它们表现出明显的典型香气和和谐的口感,以及良好的泡沫和气泡特性。最大泡沫量与胺氮(r = 0.762)相关,而起泡特性与结合二氧化碳的质量分数(r = 0.977)相关。Kefesiya 品种的红色起泡酒因含有大量花青素而呈深石榴红色。它还含有槲皮素和苷,这些物质以其生物(P-维生素)活性和强大的抗氧化性而闻名。Dzhevat Kara 和 Ekim Kara 的早期低糖(< 18 克/100 立方厘米)品种具有相同的酸度,但酚类物质种类较少,颜色也较浅。在这项研究中,克里米亚本土葡萄品种 Kokur Beliy、Sary Pandas、Soldaya 和 Kefesia 显示出了酿造年轻起泡葡萄酒的良好前景。其他品种则需要特殊技术来保持其典型特性和香味/口感的平衡。新技术使我们有可能在收获年就获得独一无二的高品质产品,从而扩大了起泡葡萄酒的生产范围和产量。
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引用次数: 0
Vertical Vibratory Mixers in Flour-Mixing Technology 面粉混合技术中的立式振动搅拌机
Q3 Economics, Econometrics and Finance Pub Date : 2024-03-28 DOI: 10.21603/2074-9414-2024-1-2492
Dmitry Borodulin, M. Shulbaeva, O. Musina, Dmitry Sukhorukov
The food industry is currently demonstrating a tendency to substitute traditional high-humidity raw materials with their dry analogues. This research introduces new designs of vertical vibrating mixers that could preprogram flour mix quality. The vertical continuous vibration mixers designed for granular materials showed a good potential for a wider scope of application. The experiment involved high-quality wheat flour, sugar, salt, egg powder, and powdered milk, as well as three vertical mixers, i.e., a lifting mixer, a flow mixer, and a cascade mixer. Wheat flour entered the working body of the mixer and came into a stable vibration-boiling state in layers of ≤ 35 mm with a vibration amplitude of 4.5 mm and a frequency of ≥ 20 Hz. The speed rate of the flour increased together with the oscillation frequency of the working body and the size of the perforation area but went down as the layer grew wider. The efficiency increased following the increase in the perforation area on the spiral surface and depended on the maximal thickness of the dough layer. The flow vibrating mixer proved to be the most effective one. The frequency of pulse feeding of ingredients into the mixer was ≤ 50% (Vc ≤ 14.5%) to obtain flour mixes of satisfactory quality while good-quality mixes required 25% average time the particles spent in the mixer (Vc ≤ 6%). The results obtained can be used to design technological lines for flour mix production.
食品工业目前正呈现出一种趋势,即用干燥的类似物替代传统的高湿度原料。这项研究介绍了立式振动搅拌机的新设计,可以预先设定面粉混合质量。专为颗粒材料设计的立式连续振动搅拌机在更大的应用范围内显示出良好的潜力。实验涉及优质小麦粉、糖、盐、蛋粉和奶粉,以及三种立式搅拌机,即升降式搅拌机、流动式搅拌机和级联式搅拌机。小麦粉进入搅拌机的工作机体,进入稳定的振动-沸腾状态,分层≤ 35 毫米,振幅为 4.5 毫米,频率≥ 20 赫兹。面粉的速度随着工作机体的振动频率和穿孔面积的增大而增加,但随着层的增宽而降低。效率随螺旋面穿孔面积的增加而提高,并取决于面团层的最大厚度。事实证明,流动振动搅拌器是最有效的搅拌器。要获得质量令人满意的面粉混合料,向搅拌机中加入原料的脉冲频率≤50%(Vc≤14.5%),而质量好的混合料需要 25% 的颗粒在搅拌机中的平均停留时间(Vc≤6%)。所获得的结果可用于设计面粉混合生产的技术路线。
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引用次数: 0
Effect of Wine and Grape Spirits from Table Grape Varieties on Sensory Profile of Grape Beverages 食用葡萄品种酿制的葡萄酒和葡萄烈酒对葡萄饮料感官特征的影响
Q3 Economics, Econometrics and Finance Pub Date : 2024-03-28 DOI: 10.21603/2074-9414-2024-1-2484
Olga Sheludko, Anton Prakh, Larisa Chemisova, Roman Bakhmetov
Table grapes that have lost their marketable appearance are considered waste products. However, such grapes still possess some technological properties that make it possible to use them as a raw material for wine and grape spirits. This research featured the effect of the composition and technology of table grape alcohols on the volatile compounds and sensory profile of grape beverages. The study involved six white and six red grape beverages. In the test samples, the fermentation process was stopped by adding wine spirits and grape spirits obtained by rectification of distillates from table grapes. In the control samples, the procedure involved rectified grain alcohol. The physicochemical parameters of drinks and spirits were defined by standard methods. The highly volatile compounds were determined by gas chromatography. The sensory assessment was conducted by panelists from the Winemaking Research Center of the North-Caucasian Federal Scientific Center of Horticulture, Viticulture, and Winemaking. In this study, the wine spirits and the grape spirits obtained from table grapes had no effect on the standard indicators, e.g., volatile acids and acetoin. However, they increased the mass concentrations of highly volatile compounds in the following manner: drinks with grain alcohol ˂ drinks with wine alcohol ˂ drinks with grape alcohol. The content of acetaldehyde increased by 10–14% while the contents of ethyl acetate, esters, and higher alcohols increased by 25–35, 4.5–8.5, and 15%, respectively. The furfural content increased by 0.4–1.4 mg/L in the samples with grape alcohol. The samples with white grape varieties acquired a more prominent floral-honey flavor whereas those with black grapes acquired hints of hazelnut and honey. As a result of the study, it was found that wine alcohol and grape alcohol moderately increased the content of volatile compounds in drinks and had a positive effect on their sensory perception, which proves the expediency of their use in beverage technology.
失去市场价值的鲜食葡萄被视为废品。不过,这些葡萄仍然具有一些技术特性,可以用作葡萄酒和葡萄烈酒的原料。这项研究的重点是食用葡萄酒精的成分和技术对葡萄饮料挥发性化合物和感官特征的影响。研究涉及六种白葡萄酒和六种红葡萄酒。在测试样品中,通过添加葡萄酒烈酒和从食用葡萄蒸馏物中精馏得到的葡萄烈酒来停止发酵过程。在对照样品中,则加入了经过精馏的谷物酒精。饮料和烈酒的理化参数按标准方法测定。高挥发性化合物采用气相色谱法测定。感官评估由北高加索联邦园艺、葡萄栽培和酿酒科学中心酿酒研究中心的专家小组成员进行。在这项研究中,葡萄酒烈酒和从鲜食葡萄中提取的葡萄烈酒对挥发性酸和乙炔等标准指标没有影响。然而,它们却以如下方式增加了高挥发性化合物的质量浓度:含有谷物酒精的饮品 ˂ 含有葡萄酒酒精的饮品 ˂ 含有葡萄酒精的饮品。乙醛的含量增加了 10-14%,乙酸乙酯、酯类和高级醇的含量分别增加了 25-35、4.5-8.5 和 15%。含有葡萄酒精的样品中糠醛含量增加了 0.4-1.4 毫克/升。含有白葡萄品种的样品具有更突出的花香和蜂蜜味,而含有黑葡萄品种的样品则具有榛子和蜂蜜的味道。研究结果表明,葡萄酒酒精和葡萄酒精适度增加了饮料中挥发性化合物的含量,并对其感官有积极影响,这证明了它们在饮料技术中的应用是非常便捷的。
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引用次数: 0
Gliadin Proteins in Muffins with Quinoa Flour 藜麦粉松饼中的麸质蛋白
Q3 Economics, Econometrics and Finance Pub Date : 2024-03-28 DOI: 10.21603/2074-9414-2024-1-2490
Vesna Gojković Cvjetković, Dragana M. Skuletic, Ž. Marjanović-Balaban, D. Vujadinović, Danijela Z. Rajic, Vladimir M. Tomovic
Partial replacement of wheat flour in foodstuffs is of great importance in the food industry. Muffins are a type of semi-sweet cake that is traditionally made from wheat flour. They are especially favored by children and senior citizens. Muffins have a long shelf life, which also contributes to their popularity. However, gluten, the main protein in wheat flour, is commonly associated with celiac disease. Gluten consists of two fractions: gliadins and glutenins. In this experiment, the original muffins contained 100% wheat flour. Then, we replaced a portion of wheat flour with 25, 50, and 75% quinoa flour. The samples were stored for 0, 2, and 4 weeks. After that, gliadin proteins were extracted with 70% (v/v) ethanol. We separated gliadin using a high-performance liquid chromatograph (Agilent Technologies 1260 Infinity, USA) and measured the total amount of gliadin protein and the amount of gliadin proteins per fraction. The absorbance tests were conducted at 210 nm. The gliadin protein content was significantly reduced to the wheat vs. quinoa ratio of 50:50 because quinoa is gluten-free, even though it is rich in protein. During the storage time of 0, 2, and 4 weeks, the protein content fell down in the samples with the wheat vs. quinoa ratios of 100:0, 75:25, and 50:50. However, the muffins with 25% wheat flour and 75% quinoa demonstrated an increase in gliadin content. The results obtained could be a good starting point for the development of high-fiber, gluten-free, and more nutritionally valuable muffins.
在食品工业中,部分替代小麦粉具有重要意义。松饼是一种传统上用小麦粉制作的半甜蛋糕。它们尤其受到儿童和老年人的喜爱。松饼的保质期较长,这也是其受欢迎的原因之一。然而,小麦粉中的主要蛋白质麸质通常与乳糜泻有关。麸质蛋白由两种部分组成:胶蛋白和麸质蛋白。在这项实验中,原始松饼含有 100% 的小麦粉。然后,我们用 25%、50% 和 75% 的藜麦面粉替换了部分小麦面粉。样品分别存放 0 周、2 周和 4 周。之后,用 70% (v/v)乙醇提取麦胶蛋白。我们使用高效液相色谱仪(Agilent Technologies 1260 Infinity,美国)分离麦胶蛋白,并测量麦胶蛋白的总量和每个馏分中麦胶蛋白的含量。吸光度测试在 210 纳米波长处进行。在小麦与藜麦的比例为 50:50 时,胶淀粉蛋白含量明显降低,因为藜麦虽然富含蛋白质,但不含麸质。在贮藏 0 周、2 周和 4 周期间,小麦与藜麦比例为 100:0、75:25 和 50:50 的样品蛋白质含量都有所下降。不过,小麦粉含量为 25% 而藜麦含量为 75% 的松饼中的麦胶蛋白含量有所增加。这些结果可以作为开发高纤维、无麸质和营养价值更高的松饼的良好起点。
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引用次数: 0
Environmentally friendly energy, extremophilic microorganisms, enzymatic activity, microbial fuel cell, hard-to-decompose substrates 环保能源、嗜极端微生物、酶活性、微生物燃料电池、难分解基质
Q3 Economics, Econometrics and Finance Pub Date : 2024-03-28 DOI: 10.21603/2074-9414-2024-1-2486
A. Dmitrieva, E. Faskhutdinova, T. Larichev, Natalia Velichkovich, Veronika Boger, Larisa Aksenova
Traditional energy sources pollute the environment. Microbial fuel cells are an alternative energy source that can reduce the environmental burden. Microbial fuel cells also remove recalcitrant wastes from wastewater. This research featured the enzymatic potential of microbial isolates obtained from the Abakan Arzhan thermal spring. The study involved isolates of the genera Geobacter, Thermomonas, and Rhodopseudomonas. The keratinolytic analysis was in line with State Standard R 55987-2014. The chitinolytic activity was determined by injecting a bacterial suspension on Petri dishes with a chitin-containing medium. The lipolytic analysis involved cultivating the isolates in Stern’s glycerol fuchsin broth. The xylan hydrolysis depended on the reducing sugars. The cellulase activity was measured according to the standard method recom mended by the International Union of Pure and Applied Chemistry (IUPAC). The catalase potential was evaluated by the gasometric method on 1% gasoline media. The optimal parameters of consortium cultivation were determined by the voltage generated. The Geobacter isolate had the maximal keratinolytic activity while the Thermomonas isolate demonstrated the maximal protein hydrolysis (80.1 ± 1.5%). Both Geobacter and Rhodopseudomonas showed good lytic activity against chitin with the lysis zone of ≥ 3 mm. The Geobacter isolate demonstrated as many as 350 units of xylanase activity and 365 units of cellulase activity; Ther momonas had 350 units of xylanase activity and 360 units of cellulase activity; Rhodopseudomonas showed 310 units of xylanase activity and 304 units of cellulase activity. The maximal catalase properties belonged to Geobacter (1.40 units) and Thermomonas (1.38 units). The maximal energy generation by bacterial consortia occurred at pH 8 and 45°C after 48 h of cultivation. In this research, isolates of the genera Geobacter, Thermomonas, and Rhodopseudomonas from the Abakan Arzhan thermal spring were able to remove recalcitrant components, thus demonstrating good prospects for biological treatment of industrial wastewater.
传统能源会污染环境。微生物燃料电池是一种可减轻环境负担的替代能源。微生物燃料电池还能清除废水中的难降解废物。这项研究的特点是从阿巴坎阿尔山温泉中分离出的微生物的酶潜能。研究涉及地杆菌属、热单胞菌属和红假单胞菌属的分离物。角质溶解分析符合 R 55987-2014 国家标准。几丁质溶解活性的测定方法是在培养皿中注入含几丁质培养基的细菌悬浮液。脂肪分解分析是在斯特恩甘油福氏肉汤中培养分离菌。木聚糖的水解取决于还原糖。纤维素酶活性是根据国际纯粹与应用化学联合会(IUPAC)建议的标准方法测定的。过氧化氢酶的潜力是在 1%汽油培养基上用气体计量法评估的。根据产生的电压确定了菌群培养的最佳参数。分离出的革兰氏菌具有最高的角质溶解活性,而分离出的热单胞菌则具有最高的蛋白质水解活性(80.1 ± 1.5%)。革兰氏菌和红假单胞菌对几丁质都表现出良好的裂解活性,裂解区≥ 3 毫米。Geobacter 分离物的木聚糖酶活性高达 350 个单位,纤维素酶活性高达 365 个单位;Ther Momonas 的木聚糖酶活性为 350 个单位,纤维素酶活性为 360 个单位;Rhodopseudomonas 的木聚糖酶活性为 310 个单位,纤维素酶活性为 304 个单位。过氧化氢酶活性最高的是革兰氏菌(1.40 个单位)和热单胞菌(1.38 个单位)。培养 48 小时后,在 pH 值为 8、温度为 45°C 的条件下,细菌群产生的能量最大。在这项研究中,从阿巴坎阿尔山温泉中分离出的革兰氏菌属、热单胞菌属和红假单胞菌属能够去除难降解成分,从而展示了生物处理工业废水的良好前景。
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引用次数: 0
Effect of Antibacterial Brine on Quality and Microbiological Safety of Meat Products 抗菌盐水对肉制品质量和微生物安全的影响
Q3 Economics, Econometrics and Finance Pub Date : 2024-03-28 DOI: 10.21603/2074-9414-2024-1-2496
Mikhail Danilov, Svetlana Leskova, Aldar Purbuev, Svetlana Pavlova, Y. Zabalueva
Nomad livestock farming is an extra raw material resource for regions with harsh climate. Foods based on meat of indigenous animals expand the range of products with high consumer properties. The quality and safety of meat products usually depend on the brine. The present research featured the effect of brine with Island moss (Cetrária islándica (L.) Ach.) on the sensory profile and microbiological safety of meat products. The study involved meat of two-year-old indigenous cows, as well as multicomponent antibacterial and standard extrusion brines. The brine was injected with a syringe-injector with a hollow perforated needle at a 20 mm pitch. The tenderization took place in a universal express tenderizer with a rotation speed of 16 rpm and lasted for 10 h. The shelf-life was determined based the on microbiological, chemical, and sensory indicators. By the end of the reserve shelf-life, the total microbial count was 1.2×103 CFU/g in the control and 1.0×103 CFU/g in the experimental sample. No opportunistic pathogenic bacteria or microorganisms were detected. No opportunistic pathogenic microorganisms were revealed when the microbiological parameters were studied in standard quantities and in quantities increased by an order of magnitude. The changes in acid and peroxide numbers during storage indicated a stable oxidation of the fat component in the experimental sample. Its sensory evaluation exceeded the control sample by 0.9 points in terms color, texture, and smell. The meat marinated with C. islándica compiled with the quality standard and had a shelf-life which exceeded that of the traditionally-marinated meat by 5 days.
游牧畜牧业是气候恶劣地区的额外原材料资源。以本地动物肉类为基础的食品扩大了具有高消费特性的产品范围。肉制品的质量和安全性通常取决于盐水。本研究的特点是使用岛苔(Cetrária islándica (L.) Ach.)盐水对肉类产品的感官特征和微生物安全性的影响。这项研究涉及两岁本土奶牛的肉以及多组分抗菌盐水和标准挤压盐水。盐水是用注射器注入的,注射器上有一个间距为 20 毫米的空心穿孔针。嫩化在转速为 16 rpm 的通用快速嫩化机中进行,持续 10 小时。保质期根据微生物、化学和感官指标确定。在保质期结束时,对照组样品的微生物总数为 1.2×103 CFU/g,实验组样品的微生物总数为 1.0×103 CFU/g。没有检测到机会致病细菌或微生物。以标准数量和增加一个数量级的数量对微生物参数进行研究时,均未发现机会致病微生物。储存过程中酸和过氧化物数量的变化表明,实验样品中的脂肪成分氧化稳定。其感官评价在颜色、质地和气味方面比对照样品高出 0.9 分。用 C. islándica 腌制的肉符合质量标准,保质期比传统腌制的肉长 5 天。
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引用次数: 0
Effect of External Factors on Trace Element Profile and Biomass of Mustard (Brássica júncea L.) Microgreens: Neural Network Analysis 外部因素对芥菜(Brássica júncea L.)微茎微量元素含量和生物量的影响:神经网络分析
Q3 Economics, Econometrics and Finance Pub Date : 2024-03-28 DOI: 10.21603/2074-9414-2024-1-2487
Yan Puhalsky, Nikolai Vorobyov, S. Loskutov, Mariia A. Chukaeva, R. Glushakov, Andrew Babyka, Denis Meshcheriakov, Alla Yakubovskaya
Growing organic microgreens indoors requires a unified technological procedure with various external elicitors. The quality of seedlings depends on their ability to accumulate essential microelements. This research assessed the nutrient profile of mustard microgreens using the method of fractal calculation with repeating numerical series. The experiment involved mustard (Brássica júncea L.) of the Nika variety grown in a closed box for 15 days under aggregation with an intensive 16-h photocycle (440 µmoL m2/s). The plants were inoculated with the endomycorrhizal fungus Glomus mosseae. A solution of fulvic acids (100 mg/L) served as a stabilizing organic additive and was introduced into the coconut substrate. The physical treatment included weak static electromagnetic field with magnetic induction (20 mT). The elemental analysis was performed by inductively coupled plasma atomic emission spectrometry on an ICPE-9000 device (Shimadzu, Japan). According to the calculated indices of the microelement biocomposition, the best result belonged to the sample treated with fulvic acids and weak electromagnetic field (IndBcomL = 0.27). The resulting biomass of dry powder for elemental analysis was 10.2 g, which was twice as high as the values obtained in the control sample, not subjected to any external influences (5.2 g). All the variants with mycorrhization produced no positive effect on the total pool of microelements during vegetation. The increase in biomass averaged as low as 20%. Zinc increased by 33.3% while aluminum and iron decreased by 59.5 and 18.0%, respectively. The neural network analysis of the microelements in mustard microgreens proved effective as a mathematical model for biochemical diagnostics of biomass quality. The method could be used to optimize the biotechnological process for other indoor crops as it makes it possible to partially substitute mineral fertilizers with organic and bacterial complex.
在室内种植有机微型蔬菜需要采用统一的技术程序,并使用各种外部诱导剂。秧苗的质量取决于其积累必需微量元素的能力。这项研究利用分形计算方法和重复数字序列评估了芥菜微菜的营养成分。实验涉及 Nika 品种的芥菜(Brássica júncea L.),在封闭箱中生长 15 天,光周期为 16 小时(440 µmoL m2/s)。植物接种了内生菌根真菌 Glomus mosseae。在椰子基质中加入富勒酸溶液(100 毫克/升)作为稳定有机添加剂。物理处理包括带磁感应的弱静态电磁场(20 mT)。元素分析采用电感耦合等离子体原子发射光谱(ICPE-9000)装置(日本岛津)进行。根据计算得出的微量元素生物合成指数,富勒酸和弱电磁场处理的样品结果最好(IndBcomL = 0.27)。由此产生的用于元素分析的干粉生物量为 10.2 克,是未受任何外部影响的对照样品(5.2 克)的两倍。有菌根的所有变体对植被过程中的微量元素总量都没有产生积极影响。生物量的平均增幅低至 20%。锌增加了 33.3%,而铝和铁分别减少了 59.5% 和 18.0%。芥菜微菜中微量元素的神经网络分析被证明是生物质质量生化诊断的有效数学模型。该方法可用于优化其他室内作物的生物技术过程,因为它可以用有机肥和细菌复合肥部分替代矿物肥料。
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引用次数: 0
Express Diagnostics of Bankruptcy Risks Based on a Selective-Indicative Model 基于选择性-指示性模型的破产风险快速诊断系统
Q3 Economics, Econometrics and Finance Pub Date : 2024-03-28 DOI: 10.21603/2074-9414-2024-1-2498
Svetlana Chernichenko, R. Kotov
Effective bankruptcy risk diagnostics may prevent a financial crisis in Russia’s national economy. The article introduces a novel express tool for bankruptcy diagnostics based on early recognition of alert signs, crisis fields, and preliminary pre-crisis assessment. The tool is a selective-indicative model with regional and industrial specifications. Regional and industrial exhibitors served as benchmark indicators. The empirical material included statistics, reference materials, and financial reports from agricultural organizations in the period of external economic shocks (2014–2022), Kemerovo region, Russia. First, the alert signals of bankruptcy risk were identified based on 22 original methods of financial crisis forecasting. After that, they were assessed for practical popularity. The identified default risk signals were linked to the existing criteria of financial insolvency, subjected to economic interpretation, and classified. After fixing the analytical reference vectors, the authors identified the share of each indicator. By determining the latest results of model exponents, they ensured the direction of analytical reference vectors to maximize the disabled function. The next stage involved systematization and synthesis of alert signals into a diagnostic model to be developed into a gradation indicator. After fixing the signal analytical base, the model was tested to formulate conclusions about its adaptability in the current economy. The resulting model relied on the share of each alert signal of bankruptcy risk in the rating number. It may improve the quality of predictive diagnostics. As the model needs few exponents, it provides a high-speed crisis analysis.
有效的破产风险诊断可预防俄罗斯国民经济的金融危机。文章介绍了一种新颖的破产诊断表达工具,该工具基于对预警信号、危机领域和危机前初步评估的早期识别。该工具是一个具有地区和行业规格的选择性指示模型。地区和行业参展商作为基准指标。实证材料包括外部经济冲击时期(2014-2022 年)俄罗斯克麦罗沃州农业组织的统计数据、参考资料和财务报告。首先,根据 22 种独创的金融危机预测方法确定了破产风险警报信号。之后,对这些信号的实用性进行了评估。确定的违约风险信号与现有的金融破产标准相关联,并对其进行经济解释和分类。在固定了分析参考向量后,作者确定了每个指标的份额。通过确定模型指数的最新结果,他们确保了分析参考向量的方向,以实现残缺函数的最大化。下一阶段涉及将警报信号系统化并合成为诊断模型,以开发成分级指标。在确定信号分析基础后,对模型进行了测试,以得出其在当前经济中的适应性结论。由此产生的模型依赖于破产风险的每个警报信号在评级数中所占的份额。它可以提高预测诊断的质量。由于该模型所需的指数很少,因此可提供高速的危机分析。
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引用次数: 0
Enzymatic Liquefaction and Characterization of Mangifera laurina Blume 月橘的酶液化和特性分析
Q3 Economics, Econometrics and Finance Pub Date : 2024-03-28 DOI: 10.21603/2074-9414-2024-1-2485
Lejaniya Abdul Kalam Saleena, Kelly Yie Lin Tan, Lee Sin Chang, L. Pui
The fruit Mangifera laurina Blume lacks sufficient research attention, with no literature available on its physicochemical properties, proximate nutritional composition, carotenoid content, or enzyme liquefaction process. Therefore, we aimed to optimize the parameters for enzymatic liquefaction of M. laurina puree and comprehensively analyze its characteristics. Homogenized pulp of M. laurina was treated with different enzymes (Pectinex Ultra SPL, Celluclast, Fungamyl, and Termamyl). Pectinex Ultra SPL was selected as the most effective enzyme as it significantly decreased viscosity and increased juice yield. Pectinex Ultra SPL was then used to treat the homogenized pulp at different concentrations (0–4.0%), different incubation times (0–2.5 h), and different incubation temperatures (25–60°C). We considered these parameters as independent variables and studied their effects on viscosity, juice yield, total soluble solids, pH, and color to establish optimum conditions for the enzymatic liquefaction of M. laurina pulp. The recommended enzymatic liquefaction conditions were set as 2.0% Pectinex Ultra SPL at 45°C for 2.0 h. The optimized enzyme-liquefied mango puree showed a noteworthy decrease in total carotenoids (174.15 ± 0.04 µg/100 g), crude protein, crude fat, and crude fiber, compared to fresh mango puree. However, enzymatic liquefaction provided the mango puree with higher contents of moisture and ash, better water activity, and higher juice yield, compared to fresh mango puree. Enzymatic liquefaction of fruit juice provides advantages in terms of improved digestion, increased yield, and enhanced economic profit. Its ability to enhance nutrient availability, increase extraction rates, and optimize production processes makes it a valuable technique in various food industries.
目前,关于月橘果泥的理化特性、近似营养成分、类胡萝卜素含量以及酶液化工艺等方面的研究还缺乏足够的重视。因此,我们旨在优化月桂树果泥的酶液化参数,并全面分析其特性。用不同的酶(Pectinex Ultra SPL、Celluclast、Fungamyl 和 Termamyl)处理均质的月桂果浆。Pectinex Ultra SPL 被选为最有效的酶,因为它能显著降低粘度并提高果汁产量。然后使用 Pectinex Ultra SPL 以不同浓度(0-4.0%)、不同培养时间(0-2.5 小时)和不同培养温度(25-60°C)处理匀浆。我们将这些参数视为自变量,研究它们对粘度、果汁产量、总可溶性固形物、pH 值和颜色的影响,以确定月桂芒果浆酶液化的最佳条件。优化的酶液化芒果泥与新鲜芒果泥相比,总类胡萝卜素(174.15 ± 0.04 µg/100 g)、粗蛋白、粗脂肪和粗纤维显著减少。不过,与新鲜芒果泥相比,酶液化后的芒果泥水分和灰分含量更高,水分活性更好,果汁产量更高。酶法液化果汁具有改善消化、提高产量和增加经济效益等优点。酵素液化技术能够提高营养成分的可用性,提高提取率,优化生产流程,因此在各种食品工业中都是一项非常有价值的技术。
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引用次数: 0
Low-Temperature Preservation of Cherries 樱桃的低温保存
Q3 Economics, Econometrics and Finance Pub Date : 2024-03-28 DOI: 10.21603/2074-9414-2024-1-2499
B. Guseynova, R. Musaeva
Cherries (Prunus avium L.) are valued for their taste and nutritional properties. However, they are highly perishable. A low-temperature preservation technology can preserve cherries without spoiling their beneficial properties. This research experimentally substantiated the optimal methods and modes of freezing cherries, defined their refrigerated shelf-life, and identified varieties for low-temperature preservation. The study featured cherries of eight varieties grown in the northern foothills of Dagestan. Fresh cherries served as control. Some cherries were frozen by immersion in a liquid solution of water, alcohol, and sugar (65:20:15) at –24°C. Others were frozen in bulk in air at –30, –33, and –35°C to be stored at –22°C for 3, 9, and 12 months. The nutritional profile was determined by standard methods of chemical analysis. The amount of juice lost during defrosting was assessed by the difference in weight before and after defrosting. The sensory evaluation involved a five-point scale. The best nutritional profile belonged to the sample frozen in air at –35°C while the worst result was observed in the cherries frozen at –30°C. The cherries frozen in bulk in air at –33°C and those immersed in liquid coolant at –24°C demonstrated a poorer nutritional content (by 4.2–5.4%) than the sample frozen in air at –35°C. The sample frozen in air preserved 77.5–81.6% vitamin C, 83.7–89.0% pectin substances, 85.1–88.5% anthocyanins, and 81.4–86.4% sugar after 12 months of storage at –22°C. The sample frozen in liquid coolant retained 75.9–79.0% vitamin C, 84.4–88.2% pectin substances, 83.8–87.5% anthocyanins, and 80.3–84.7% sugar after 12 months of storage. The cherries of the Lezginka, Dagestanka, and Valery Chkalov varieties showed minimal changes after 12 months. The varieties of Buynakskaya, Krupnoplodnaya, and Polyanka could be recommended for nine-month storage. The varieties of Zhemchuzhnaya and Gudzon lost consumer attractiveness as early as after 3 months. When frozen in bulk in air at –33°C and immersed in liquid coolant at –24°C, the cherries preserved their physicochemical properties after 3, 9, and 12 months of storage at –22°C. The study expanded the existing data about low-temperature preservation of cherries and their health benefits.
樱桃(Prunus avium L.)因其口感和营养价值而备受青睐。然而,樱桃极易变质。低温保存技术可以在不破坏樱桃有益特性的前提下保存樱桃。这项研究通过实验证实了冷冻樱桃的最佳方法和模式,确定了樱桃的冷藏货架期,并确定了适合低温保存的樱桃品种。研究以生长在达吉斯坦北麓的八个品种的樱桃为对象。新鲜樱桃作为对照。一些樱桃浸泡在水、酒精和糖(65:20:15)的液体溶液中,在-24°C的温度下冷冻。其他樱桃则在-30、-33和-35°C的空气中散装冷冻,然后在-22°C的温度下储存3、9和12个月。营养成分采用标准的化学分析方法进行测定。解冻过程中果汁的流失量通过解冻前后的重量差来评估。感官评估采用五级评分法。营养成分最好的是在零下 35 摄氏度空气中冷冻的样品,而在零下 30 摄氏度冷冻的樱桃营养成分最差。在零下 33 摄氏度空气中批量冷冻的樱桃和在零下 24 摄氏度液体冷却剂中浸泡的樱桃,其营养成分含量比在零下 35 摄氏度空气中冷冻的樱桃低(4.2%-5.4%)。在空气中冷冻的样品在零下 22 摄氏度储存 12 个月后,维生素 C 保存率为 77.5%-81.6%,果胶物质保存率为 83.7%-89.0%,花青素保存率为 85.1%-88.5%,糖分保存率为 81.4%-86.4%。在液体冷却剂中冷冻的样品在储存 12 个月后,维生素 C 含量为 75.9-79.0%,果胶物质含量为 84.4-88.2%,花青素含量为 83.8-87.5%,糖含量为 80.3-84.7%。Lezginka、Dagestanka 和 Valery Chkalov 品种的樱桃在 12 个月后变化极小。Buynakskaya、Krupnoplodnaya和Polyanka品种建议贮藏9个月。Zhemchuzhnaya 和 Gudzon 品种在 3 个月后就失去了对消费者的吸引力。散装樱桃在零下 33 摄氏度的空气中冷冻和在零下 24 摄氏度的液体冷却剂中浸泡时,在零下 22 摄氏度的环境中贮藏 3 个月、9 个月和 12 个月后,其理化特性仍然保持不变。这项研究扩展了有关樱桃低温保存及其健康益处的现有数据。
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引用次数: 0
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Food Processing: Techniques and Technology
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