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Effect of 1-MCP treatment on tomato photosynthetic chlorophyll activity during storage 1-MCP 处理对贮藏期间番茄光合叶绿素活性的影响
Q3 Agricultural and Biological Sciences Pub Date : 2023-11-24 DOI: 10.1556/446.2023.00078
Zsuzsanna Horváth-Mezőfi, Emese Bátor, Gergő Szabó, Mónika Göb, Z. Sasvar, Lien Le Phuong Nguyen, Koppány Majzinger, K. Hidas, Anna Visy, G. Hitka, T. Zsom
Ethylene has key roles in triggering and speeding up ripening processes, which in tomatoes take the form of various qualitative changes. Tomatoes, just like all climacteric fruits, need a continuous ethylene exposure to accelerate ripening. Therefore, it is possible to use ripening regulators preventing ethylene binding. According to some studies, chlorophyll fluorescence measurements can be used at least as efficiently as tristimulus colorimetry classifying tomatoes based on maturity. Measurements were carried out by treating fresh tomatoes with 1-MCP (1-methylcyclopropene) at six different stages of ripening and studying the changes in chlorophyll content related quality characteristics (e.g. surface colour, chlorophyll fluorescence) during postharvest storage (two-week refrigerated storage at 15 °C followed by a two-week shelf life). According to our results, chlorophyll content and photosynthetic activity of the treated samples decreased much less than those of untreated ones. Additionally, anti-ripening treatment proved to be more effective on tomatoes at an earlier stage of ripening.
乙烯在触发和加速番茄成熟过程中起着关键作用,番茄的成熟过程表现为各种质变。西红柿和所有气候性水果一样,需要持续接触乙烯才能加速成熟。因此,可以使用催熟调节剂来防止乙烯结合。一些研究表明,叶绿素荧光测量法至少可以与三基色法一样有效地根据成熟度对西红柿进行分类。测量方法是在西红柿成熟的六个不同阶段用 1-MCP(1-甲基环丙烯)处理新鲜西红柿,并研究叶绿素含量在采后贮藏(15 °C冷藏贮藏两周,然后是两周的货架期)期间与质量特征(如表面颜色、叶绿素荧光)相关的变化。结果表明,处理过的样品叶绿素含量和光合作用活性比未处理过的样品下降得少得多。此外,防成熟处理对成熟期较早的番茄更有效。
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引用次数: 0
Modeling of pressure losses in a cylindrical duct with rectangular ribs 带有矩形肋条的圆柱形风道中的压力损失建模
Q3 Agricultural and Biological Sciences Pub Date : 2023-11-20 DOI: 10.1556/446.2023.00071
Nacer Chouchane, Hammam Chouchane, Tesnim Chouchane
In order to improve the thermal performance of heat exchangers and air collectors, we insert various forms of artificial roughness, known as ribs, into the useful duct. These ribs promote the creation of turbulent flows and enhance heat transfer by conduction, convection and radiation.However, the introduction of these ribs leads to an increase in pressure drop, requiring higher mechanical power to pump the heat transfer fluid. This experimental study focuses on estimating, using empirical approaches, the pressure losses induced by rectangular ribs with an inclined top. The ribs are made from 0.4 mm galvanized sheet steel.An experimental set-up was designed to measure the head losses generated by the ribs, from the point of entry to the point of exit from the useful duct. Using the dimensional analysis method, correlations were established to evaluate head losses as a function of flow regime and rib geometry and configuration (including different geometries for rib arrangement over the configuration area).
为了提高热交换器和空气收集器的热性能,我们在有用的管道中插入了各种形式的人工粗糙度,即肋条。然而,这些肋条的引入会导致压降增加,从而需要更高的机械功率来泵送导热流体。本实验研究的重点是利用经验方法估算顶部倾斜的矩形肋条引起的压力损失。设计了一个实验装置来测量肋条从有用管道的入口点到出口点所产生的水头损失。利用尺寸分析方法,建立了相关关系,以评估水头损失与流态、肋条几何形状和配置(包括配置区域内肋条排列的不同几何形状)的函数关系。
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引用次数: 0
A review of the advancements of potentially toxic element adsorption by various cellulose-based materials and the used adsorbents' fate 综述了各种纤维素基材料对潜在有毒元素的吸附研究进展及使用的吸附剂的命运
Q3 Agricultural and Biological Sciences Pub Date : 2023-10-06 DOI: 10.1556/446.2023.00068
Heba Naser, Imre Czinkota, Andrea Dorkota, Márk Horváth
Abstract In this study, we compile the findings to date on using several cellulose-based materials as adsorbents of potentially toxic elements (PTEs) from wastewater. Furthermore, this review discussed the destiny of PTEs-loaded cellulose-based adsorbents and some sustainable methods for their management, hoping to close the pollution loop.
在这项研究中,我们汇编了迄今为止使用几种纤维素基材料作为废水中潜在有毒元素(pte)吸附剂的研究结果。此外,本文还讨论了ptes负载纤维素基吸附剂的命运和一些可持续的管理方法,希望能够关闭污染循环。
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引用次数: 0
Do we pay more attention to the label that is considered more expensive? Eye-tracking analysis of different wine varieties 我们是否更关注那些被认为更贵的标签?不同葡萄酒品种的眼动分析
Q3 Agricultural and Biological Sciences Pub Date : 2023-09-21 DOI: 10.1556/446.2023.00069
Dorina Szakál, Zsófia Fekete-Frojimovics, Abdul Hannan Bin Zulkarnain, Erik Rozgonyi, Orsolya Fehér
Abstract In our study, using a combination of eye-tracking parameter analysis and the van Westendorp method, we investigate whether participants pay more attention to products that they perceive as more expensive or to those that they prefer in the ranking process. The experiment involved 50 participants, a questionnaire with ranking and pricing tasks, and an eye-tracking measurement. Three wine varieties (Irsai Olivér, Rosé and Merlot-Shiraz) and three different label alternatives were tested. When comparing the results of the ranking and the pricing tasks, the product that is considered more expensive is not always the one that is most appealing to the participants. If we compare the results from the analysis of the eye-tracking parameters and the pricing, we can say that in all cases the labels that received the most visual attention were those that were priced more expensively by the participants.
在本研究中,我们采用眼动追踪参数分析和van Westendorp方法相结合的方法,研究参与者在排序过程中是更关注他们认为更昂贵的产品还是更关注他们更喜欢的产品。实验涉及50名参与者,一份关于排名和定价任务的问卷,以及一项眼球追踪测量。他们测试了三种葡萄酒品种(伊赛奥利文杰、蔷薇和梅洛设拉子)和三种不同的标签替代品。当比较排名和定价任务的结果时,被认为更贵的产品并不总是最吸引参与者的产品。如果我们比较眼动追踪参数和定价分析的结果,我们可以说,在所有情况下,获得最多视觉关注的标签都是那些被参与者定价更贵的标签。
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引用次数: 0
Expanding digitalisation for subsistence and sustainability in the heart of Europe, based on the examples of Hungarian companies 以匈牙利公司为例,在欧洲中心扩大数字化,以实现生存和可持续发展
Q3 Agricultural and Biological Sciences Pub Date : 2023-03-22 DOI: 10.1556/446.2023.00058
Andrea Katona, Z. Birkner, E. Péter
The rapid technological development that is still taking place today, with increasingly interconnected IT tools, is introducing dramatic changes. The development of computer programs is rapidly transforming traditional processes and the systems that support them. It is therefore natural that the fourth industrial revolution (Industry 4.0) and its impact on Hungarian companies is one of the key topics of our time. We conducted an exploratory quantitative survey, asking 140 managers of Hungarian small, medium and large enterprises about their current situation in the context of Industry 4.0. We sought to find out to what extent the specific R&D and innovation potential of Industry 4.0 is accepted, and whether it has already been introduced in the companies. On a qualitative side, 2 case studies and 3 interviews were conducted, in which structured interviews were used to further explore the issue. We aimed to find out where SMEs stood in terms of digital preparedness and what advantages, possible disadvantages, and goals they managed to identify. Our research showed that an increasing number of companies have already decided to take the first steps towards industrial digitalisation, which will completely transform their internal processes.
今天仍在进行的快速技术发展,以及日益互联的IT工具,正在带来巨大的变化。计算机程序的发展正在迅速改变传统的过程和支持它们的系统。因此,第四次工业革命(工业4.0)及其对匈牙利公司的影响是我们这个时代的关键话题之一,这是很自然的。我们进行了一项探索性的定量调查,询问了匈牙利中小型企业的140名管理人员,了解他们在工业4.0背景下的现状。我们试图了解工业4.0的具体研发和创新潜力在多大程度上被接受,以及它是否已经在企业中引入。在定性方面,进行了2个案例研究和3次访谈,其中采用了结构化访谈来进一步探讨这个问题。我们旨在了解中小企业在数字化准备方面的地位,以及他们能够确定的优势、可能的劣势和目标。我们的研究表明,越来越多的公司已经决定迈出工业数字化的第一步,这将彻底改变其内部流程。
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引用次数: 0
Challenges of sustainable agricultural development with special regard to Internet of Things: Survey 农业可持续发展的挑战,特别是物联网:调查
Q3 Agricultural and Biological Sciences Pub Date : 2022-11-03 DOI: 10.1556/446.2022.00053
M. Neményi, A. Kovács, J. Oláh, J. Popp, Edina-Timea Erdei, E. Harsanyi, Bálint Ambrus, G. Teschner, A. Nyéki
If we want to increase the efficiency of precision technologies to create sustainable agriculture, we need to put developments and their application on a new footing; moreover, a general paradigm shift is needed. There is a need to rethink close-at-hand and far-off innovation concepts to further develop precision agriculture, from both an agricultural, landscape, and natural ecosystem sustainability perspective. With this, unnecessary or misdirected developments and innovation chains can be largely avoided. The efficiency of the agrotechnology and the accuracy of yield prediction can be ensured by continuously re-planning during the growing season according to changing conditions (e.g., meteorological) and growing dataset. The aim of the paper is to develop a comprehensive, thought-provoking picture of the potential application of new technologies that can be used in agriculture, primarily in precision technology-based arable field crop production, which emphasizes the importance of continuous analysis and optimisation between the production unit and its environment. It should also be noted that the new system contributes to reconciling agricultural productivity and environmental integrity. The study also presents research results that in many respects bring fundamental changes in technical and technological development in field production. The authors believe that treating the subsystems of agriculture, landscape, and natural ecosystem (ALNE) as an integrated unit will create a new academic interdisciplinarity. ICT, emphasizing WSN (Wireless Sensor Network), remote sensing, cloud computing, AI (Artificial Intelligence), economics, sociology, ethics, and the cooperation with young students in education can play a significant role in research. This study treats these disciplines according to sustainability criteria. The goal is to help management fulfil the most important expectation of reducing the vulnerability of the natural ecosystem. The authors believe that this article may be one of the starting points for a new interdisciplinarity, ALNE.
如果我们想提高精密技术的效率,创造可持续农业,我们就需要把发展及其应用放在一个新的基础上;此外,还需要进行一次普遍的范式转变。有必要从农业、景观和自然生态系统可持续性的角度重新思考近距离和遥远的创新概念,以进一步发展精准农业。这样,就可以在很大程度上避免不必要或误导的发展和创新链。农业技术的效率和产量预测的准确性可以通过在生长季节根据不断变化的条件(如气象)和生长数据集不断重新规划来确保。本文的目的是全面、发人深省地介绍可用于农业的新技术的潜在应用,主要是在基于精确技术的耕地作物生产中,强调了生产单位及其环境之间持续分析和优化的重要性。还应当指出,新制度有助于协调农业生产力和环境完整性。该研究还介绍了在许多方面给油田生产的技术和技术发展带来根本性变化的研究结果。作者认为,将农业、景观和自然生态系统的子系统视为一个综合单元,将创造一个新的学术交叉学科。ICT,强调WSN(无线传感器网络)、遥感、云计算、AI(人工智能)、经济学、社会学、伦理学,以及与年轻学生在教育方面的合作,可以在研究中发挥重要作用。这项研究根据可持续性标准对待这些学科。目标是帮助管理层实现减少自然生态系统脆弱性的最重要期望。作者认为,这篇文章可能是一个新的跨学科ALNE的起点之一。
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引用次数: 2
Crop-land suitability analysis using geographic information system and remote sensing 基于地理信息系统和遥感的耕地适宜性分析
Q3 Agricultural and Biological Sciences Pub Date : 2022-09-02 DOI: 10.1556/446.2022.00050
P. Ramu, B. Sai Santosh, K. Chalapathi
Food, water, and energy scarcity threaten India's future, and they must be addressed first. To meet the country's ever-increasing population needs, agricultural productivity must be expanded. For the crop-land suitability, we have studied an area of about 6,539 km2 in Vizianagaram district. The majority of the land is used for paddy agriculture (Kharif). The crop-land suitability has been evaluated based on the different parameters identified in that study area. “Remote sensing (RS)” and “geographic information system (GIS)” were combined for the crop-land suitability using nine parameters. The slope, elevation, rainfall, soil texture, lithology, groundwater, land use–land cover (LULC), TWI, and land surface temperature are the primary criteria used to determine the crop-land suitability in the Vizianagaram district (AP). Thematic maps were created using Landsat 8 images and SRTM DEM images from USGS Earth Explorer. Based on these maps and the influence of these parameters, we may assign weights to the parameters and then rank them, the Analytic Hierarchy Process (AHP) allowing us to identify which area is more suitable for good crop productivity and which is not. In this study, the soils are divided into four categories: low suitability, moderate suitability, high suitability, and extremely high suitability. The suitability index is found to be in the range of 0–55.2%, which indicates the lack of outstanding agricultural lands in the sudy region.
食物、水和能源短缺威胁着印度的未来,这些问题必须首先得到解决。为了满足国家日益增长的人口需求,必须扩大农业生产力。在农田适宜性方面,我们研究了Vizianagaram地区约6539 km2的面积。大部分土地用于水田农业(Kharif)。根据研究区确定的不同参数对农田适宜性进行了评价。采用“遥感(RS)”和“地理信息系统(GIS)”相结合的方法,利用9个参数对农田适宜性进行评价。坡面、高程、降雨量、土壤质地、岩性、地下水、土地利用-土地覆盖(LULC)、TWI和地表温度是确定Vizianagaram地区(AP)农田适宜性的主要标准。专题地图是利用美国地质调查局地球探测器的Landsat 8图像和SRTM DEM图像创建的。基于这些地图和这些参数的影响,我们可以为这些参数分配权重,然后对它们进行排序,层次分析法(AHP)使我们能够确定哪个地区更适合良好的作物生产力,哪个地区不适合。本研究将土壤分为低适宜性、中等适宜性、高适宜性和极高适宜性4类。适宜性指数在0 ~ 55.2%之间,表明研究区缺乏优秀农用地。
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引用次数: 2
Changes in colour parameters and anthocyanin content of aseptically filled sour cherry juice during storage 无菌灌装酸樱桃汁贮存过程中颜色参数及花青素含量的变化
Q3 Agricultural and Biological Sciences Pub Date : 2022-06-24 DOI: 10.1556/446.2022.00047
Á. Ribárszki, D. Székely, B. Szabó-Nótin, M. Máté
To overcome the problems of seasonality and geographical location in fruit production and processing, the production of aseptic semi-finished juice is an excellent solution. Even without refrigeration, aseptic pressing has a shelf life of more than a year, making it possible to produce finished products all year round. The production technology involves the addition of ascorbic acid to the pulp to fix or preserve colour. There is an increasing customer demand for ascorbic acid substitutes on the international market. In Hungary, one of the most important exports is aseptic sour cherry juice. In our work, ascorbic acid used for colour fixation was replaced by acerola concentrate. The anthocyanin content and colour coordinate values (L*, a*, b*, H, C) of aseptically filled sour cherry juice were determined and compared with the control sample during the 12 months of storage.
为了克服水果生产和加工中的季节性和地理位置问题,生产无菌半成品果汁是一个很好的解决方案。即使没有冷藏,无菌压制也有一年多的保质期,可以全年生产成品。生产技术包括在纸浆中加入抗坏血酸以固定或保持颜色。国际市场上客户对抗坏血酸替代品的需求越来越大。在匈牙利,最重要的出口产品之一是无菌酸樱桃汁。在我们的工作中,用acerola浓缩物代替了用于固色的抗坏血酸。测定无菌灌装的酸樱桃汁的花青素含量和色坐标值(L*、a*、b*、H、C),并在储存的12个月内与对照样品进行比较。
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引用次数: 0
Case study of commercially available gluten-free bread products: Texture changes during storage and sensory analysis 市售无麸质面包产品的案例研究:储存过程中的质地变化和感官分析
Q3 Agricultural and Biological Sciences Pub Date : 2022-03-29 DOI: 10.1556/446.2022.00039
Marcell Tóth, T. Kaszab, A. Lambert-Meretei
Gluten-free (GF) breads are often described with low quality, rapidly staling, dry mouthfeel and crumbling texture attributes. In lack of recent texture profile data on commercially available, preservative-free, freshly-baked GF bread, this study aimed to compare different types of GF products with their wheat-based counterparts during a 4-day-long storage test. Texture analysis data showed that GF loaves performed better than or comparable to the wheat-based ones in hardness, springiness and cohesiveness. Among sensorial properties mouth-feel, softness and aroma were evaluated as significantly better or similar for GF versus wheat-based products. GF cob had a saltier taste, which reduced the flavour experience. Both the texture results of the storage test and sensory data showed that the quality of GF bread products improved in recent years; they stayed comparable with their wheat-based counterparts even during a 4-day-long storage period.
无麸质(GF)面包通常被描述为质量低、快速老化、口感干燥和质地破碎。由于缺乏市面上可买到的不含防腐剂的新鲜烘焙GF面包的最新质地数据,本研究旨在在为期4天的储存测试中,将不同类型的GF产品与小麦制品进行比较。质地分析数据表明,GF面包在硬度、弹性和内聚性方面优于或可与小麦面包相媲美。在感官特性中,GF产品的口感、柔软度和香气明显优于或类似于小麦产品。GF玉米芯的味道更咸,这减少了味道体验。贮藏试验的质地结果和感官数据都表明,近年来GF面包产品的质量有所提高;即使在4天的储存期内,它们也能与小麦品种的同类保持相当。
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引用次数: 0
Comparison of raw materials for meat products 肉制品原料的比较
Q3 Agricultural and Biological Sciences Pub Date : 2022-01-28 DOI: 10.1556/446.2021.00040
J. Mihalkó, Dóra Szepesi-Bencsik, G. Zsarnóczay, L. Friedrich
Animal food, especially meat, has played an important role in the history of mankind. Different meats can be used in the production of meat products. In addition to lean meats, mechanically deboned meat (MDM) and mechanically separated meat (MSM) can also be used in meat products. However, the latter does not qualify as meat due to damage to the muscular structure due to the high pressure applied during the separation, therefore cannot be included in the meat content of products. The aim of our experiment was to compare whole, minced meat, MDM and MSM from turkey (raw and in the form of meat paste). Technofunctional tests (water-holding and -binding capacity), color measurement, chemical composition (moisture, protein and fat content), electron microscopic recording, rheological properties show that the quality of MSM is inferior to other meat raw materials. These properties can also result in the production of lower quality products.
动物性食物,尤其是肉类,在人类历史上发挥了重要作用。在肉制品的生产中可以使用不同的肉类。除了瘦肉,机械脱骨肉(MDM)和机械分离肉(MSM)也可用于肉制品。然而,由于分离过程中施加的高压对肌肉结构造成损伤,后者不属于肉类,因此不能包含在产品的肉类含量中。我们实验的目的是比较火鸡(生的和肉酱形式的)的整只、碎肉、MDM和MSM。技术性能测试(保水性和结合能力)、颜色测量、化学成分(水分、蛋白质和脂肪含量)、电子显微镜记录、流变学特性表明,MSM的质量不如其他肉类原料。这些特性也可能导致生产质量较低的产品。
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引用次数: 0
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Progress in Agricultural Engineering Sciences
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