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ENERGY USAGE AND RASPBERRY CONVECTIVE AND MICROWAVE DRYING PARAMETERS 能量使用和覆盆子对流和微波干燥参数
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.451p
Valerija Pantelić, N. Miletić, Vesna Đurović, M. Petković, A. Lukyanov, V. Filipović
The drying experiments of microwave (MD) and convective (CD) dehydration of raspberries show a shorter drying time by 86–96 % and lower energy usage resulting in energy saving of 81–89 % for MD. The average drying ratio of raspberries increases by 3.5–19 times with the application of MD. Newton's, Modified Henderson, and Pabis's, Logarithmic models were successfully used to describe the drying kinetics of raspberries. Willamette and Tulameen varieties, dehydrated on 240 W MD, showed the shortest dehydration time, the minimum energy usage, and the most efficient diffusion.
采用微波(MD)和对流(CD)干燥覆盆子的实验表明,微波(MD)和对流(CD)干燥覆盆子的时间缩短86 ~ 96%,能耗降低81 ~ 89%。采用微波(MD)干燥覆盆子的平均干燥率提高3.5 ~ 19倍。牛顿(Newton)、改良亨德森(Modified Henderson)和Pabis (Pabis)等对数模型成功地描述了覆盆子的干燥动力学。在240 W MD脱水条件下,威拉米特和图拉米的脱水时间最短,能量消耗最小,扩散效率最高。
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引用次数: 0
NATURAL ANTIMICROBIAL AGENTS: APPLICATION IN FOOD PRESERVATION AND FOOD BORN DISEASE CONTROL 天然抗菌剂:在食品保鲜和食源性疾病控制中的应用
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.357k
V. Kurćubić, S. Stajić, N. Miletić, M. Petković, I. Đurović, V. Milovanović
Natural antimicrobial agents in food have gained much attention by the consumers and the food industry. The misuse of antibiotics has resulted in the dramatic rise of microorganisms that are antibiotic resistant and tolerant to several food processing and preservation methods. Additionally, increasing consumers' awareness of the negative impact of synthetic preservatives on health compared to the benefits of natural additives has caused interest among researchers in the development and usage of natural products in foods. This article reviews natural antimicrobial agents and their application in food preservation and food born disease control
食品中的天然抗菌剂已受到消费者和食品行业的广泛关注。抗生素的滥用导致对几种食品加工和保存方法具有抗生素耐药性和耐受性的微生物急剧增加。此外,与天然添加剂的好处相比,消费者越来越意识到合成防腐剂对健康的负面影响,这引起了研究人员对食品中天然产品的开发和使用的兴趣。本文综述了天然抗菌剂及其在食品保鲜和食源性疾病防治中的应用
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引用次数: 0
RELATIONSHIPS BETWEEN SERUM ENZYME ACTIVITES IN THE MILK AND BLOOD IN DAIRY COWS DURING DIFFERENT STAGE OF LACTATION PERIOD 奶牛泌乳期不同阶段牛奶和血液中血清酶活性的关系
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.231dj
R. Đoković, Biljana Anđelić, M. Cincović, M. Petrović, Aleks Cukic, M. Lalović
This study aimed to determine blood and milk enzyme activites as indicators of liver function and their correlations in dairy cows during different stage of lactation period. Blood and milk samples were collected from 100 Holstein dairy cows during morning milking. The cows were allocated to four groups according to the production period, including cows in early (n = 18), full (n = 26), mid (n = 25) and late (n = 31) lactation. The value of serum enzyme activites of aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), gamma-glutamyl transferase (GGT), and lactate dexydrogenase (LDH) in the blood and milk were determined. The activities of blood and milk serum AST, ALT, ALP and LDH were significantly higher (P< 0.01) in early and full lactation cows than in the other two groups of cows, suggesting mild fat infiltration of liver cells. The enzyme activities in milk were positively correlated with those in the blood (P< 0.01). In conclusion, similar changes in blood and milk serum enzyme activites during lactation and milk to blood correlations confirm that milk has great potential in predicting of blood metabolites and metabolic status of cows.
本研究旨在测定奶牛不同泌乳期血液和乳酶活性作为肝脏功能指标及其相关性。采集了100头荷斯坦奶牛早晨挤奶时的血液和牛奶样本。将奶牛按泌乳期分为泌乳早期(n = 18)、泌乳完全(n = 26)、泌乳中期(n = 25)和泌乳后期(n = 31) 4组。测定血、乳中天冬氨酸转氨酶(AST)、丙氨酸转氨酶(ALT)、碱性磷酸酶(ALP)、γ -谷氨酰转移酶(GGT)、乳酸脱氢酶(LDH)的血清酶活性。泌乳早期和全乳奶牛血、乳血清AST、ALT、ALP和LDH活性极显著高于其他两组奶牛(P< 0.01),提示肝脏细胞有轻度脂肪浸润。牛奶中酶活性与血液中酶活性呈显著正相关(P< 0.01)。综上所述,泌乳期血、乳血清酶活性变化和乳血相关性相似,说明牛奶在预测奶牛血液代谢产物和代谢状态方面具有很大的潜力。
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引用次数: 0
NOVEL TRENDS IN APPLICATION AND PRETREATMENT OF LIGNOCELLULOSIC AGRICULTURAL WASTE 木质纤维素农业废弃物的应用与预处理新趋势
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.271n
V. Nikolić, S. Žilić, Danka Milovanović, Beka Sarić, Marko Vasic
Lignocellulosic biomass represents the most abundant renewable material in the world, whereas agricultural residues, including those from maize cultivation, comprise a significant fraction of the total plant waste that can be repurposed for various applications. Lignocellulosic feedstocks are non-edible and consist mainly of: cellulose, hemicellulose, and lignin, along with extractive compounds. Pretreatment is required to separate the lignocellulosic biomass into its constituents for efficient utilization. Even after extensive research and development of numerous techniques, pretreatment remains one of the most expensive phases in converting lignocellulosic biomass into biobased products.
木质纤维素生物质是世界上最丰富的可再生材料,而农业残留物,包括玉米种植的残留物,占植物废物总量的很大一部分,可以重新用于各种用途。木质纤维素原料是不可食用的,主要包括:纤维素、半纤维素和木质素,以及萃取物。预处理需要将木质纤维素生物质分离成其有效利用的成分。即使经过大量技术的广泛研究和开发,预处理仍然是将木质纤维素生物质转化为生物基产品的最昂贵的阶段之一。
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引用次数: 0
EQUIPMENT AND USAGE OF TRACTORS IN THE AGRICULTURAL COOPERATIVE “AGROPROM” 农业合作社“agroprom”拖拉机的设备和使用
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.071g
M. Gavrilović, Miloš Zelić, B. Veljković, R. Koprivica, B. Dudić, N. Pavlović
Cooperatives as a form of economic activity have become increasingly important in our country in recent years, largely influenced by government incentives in the form of financial aid for the purchase of equipment and machinery and subsidies for the purchase of livestock. In this study, using data on the activity of the agricultural cooperative „Agroprom“ from Stara Pazova, the prospects and significance of joining this form of enterprise and functioning according to cooperative principles were analyzed, focusing on the equipment with tractors and their use in primary agricultural production.
近年来,合作社作为一种经济活动形式在我国变得越来越重要,这在很大程度上是受到政府鼓励措施的影响,这些激励措施为购买设备和机器提供财政援助,为购买牲畜提供补贴。在本研究中,利用来自Stara Pazova的农业合作社“Agroprom”的活动数据,分析了加入这种企业形式并按照合作社原则运作的前景和意义,重点是拖拉机设备及其在初级农业生产中的使用。
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引用次数: 0
WATER COMPOSITION AND THEIR INFLUENCE ON THE WORK OF MALT AMYLOLYTIC ENZYMES 水的组成及其对麦芽淀粉酶工作的影响
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.421s
D. Stanisavljević, Aleksa Crkvenjakov, Jelica Lazić Saković, N. Milosavljević, S. Bogdanović, Violeta Mickovski Stefanović, P. Ilić, J. Ćirić, D. Davidović, A. Veličković
Water is an indispensable part of beer and brewing practice, and therefore it is not even possible to imagine a process in which water quality is neglected. For the purposes of this experiment, several different watersamples were collected from available springs. The basis of the experiment was the colored reaction of iodine on starch, which would prove the hydrolysis of starch granules from grains. This leads to the conclusion that the mineral composition, which affects the hardness of the water, does not have a decisive influence on the work of amylolytic enzymes, at least not to the extent that would significantly affect the production process.
水是啤酒和酿造过程中不可缺少的一部分,因此,甚至不可能想象一个忽视水质的过程。为了本实验的目的,从可用的泉水中收集了几种不同的水样。实验的基础是碘对淀粉的显色反应,证明了淀粉颗粒是由颗粒水解而成的。由此得出的结论是,影响水硬度的矿物成分对淀粉酶的作用没有决定性影响,至少没有达到显著影响生产过程的程度。
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引用次数: 0
CELERY („APIUM GRAVEOLENS L.“) AS A SOURCE OF PHYTOCHEMICALS WITH ANTIOXIDANT AND ANTIBACTERIAL EFFECTS 芹菜(apium graveolens l .)是一种具有抗氧化和抗菌作用的植物化学物质的来源
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.315dj
Vesna Đurović, L. Mandić, Marija Igrošanac, Mirjana Radovanović, M. Pešaković, J. Mladenović, D. Đukić
The aim of this work was to investigate the content of phytochemicals in celery root and its antioxidant and antibacterial potential. The content of total phenols in celery root was 2.99 mg GAE g-1, total flavonoids 1.38 mg RE g-1, total tannins 1.87 mg GAE g-1 and vitamin C 12.7 mg 100 g-1. Antioxidant activity measured by the DPPH method and expressed in % inhibition were 42.26 % or 2.38 µmol TE g-1. Antibacterial activity was tested on pure cultures of Enterococcus faecium, Listeria monocytogenes, Staphylococcus aureus, Salmonella enteritidis, E. Coli and Serratia marcescens. Listeria monocytogenes showed the highest sensitivity while the Salmonella enteritidis and E. coli were the most resistant.
研究芹菜根中植物化学物质的含量及其抗氧化、抗菌活性。芹菜根中总酚含量为2.99 mg GAE g-1,总黄酮含量为1.38 mg RE g-1,总单宁含量为1.87 mg GAE g-1,维生素C含量为12.7 mg 100 g-1。DPPH法测定的抗氧化活性为42.26%,抑制率为2.38µmol TE -1。对粪肠球菌、单核增生李斯特菌、金黄色葡萄球菌、肠炎沙门氏菌、大肠杆菌和粘质沙雷菌的纯培养物进行了抑菌活性测试。单增李斯特菌的敏感性最高,肠炎沙门氏菌和大肠杆菌的耐药性最强。
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引用次数: 0
PROMOTING SMART AGRICULTURAL PRACTICES IN MAIZE PRODUCTION INBIH - H2020 SMARTWATER PROJECT 促进玉米生产中的智慧农业实践- 2020年智慧水项目
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.031m
M. Marković, N. Čereković, Đurađ Hajder, M. Šipka, N. Zapata, T. A. Paço, E. Riezzo, S. Čadro, M. Todorović
Agricultural practices in Bosnia and Hercegovina demand different improvements, including smart management of land and water resources. A new H2020 project started in 2021 in this regard. The objective of this publication is to spread knowledge about SMARTWATER project by describing different achievements in two years of implementation (2021-2022), to invite target groups to participate in the action and to promote smart agricultural practices. Presented results indicate that the implementation is at a satisfactory level. Project consortium will continue with efforts, including twinning, networking, research, dissemination and increasing competency and fund rising skills.
波斯尼亚和黑塞哥维那的农业实践需要不同的改进,包括对土地和水资源的明智管理。在这方面,新的H2020项目于2021年启动。本出版物的目的是通过描述两年实施(2021-2022)的不同成就来传播有关SMARTWATER项目的知识,邀请目标群体参与行动并促进智能农业实践。结果表明,该方法的实施效果令人满意。项目联盟将继续努力,包括结对、建立网络、研究、传播、提高能力和资助提高技能。
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引用次数: 0
STATE OF SOIL FERTILITY IN THE AREA OF THE POŽAREVAC CITY poŽarevac城市地区的土壤肥力状况
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.289s
Vladanka Stupar, M. Saulić, Milica Blažić, Zlata Živković, Darko Stojićević, Marko Stokic, Bojan Stević
Soil analysis provides information about the quality of the soil and the input of nutrients that are needed to make the soil better and obtain a high crop yield. The research in this paper included the analysis of fertility parametars of soil in wider territory of the Požarevac city during 2017 and 2022 year. Soil analysis shows that average soil acidity, i.e. its pH value of the aqueous soil solution (pH – H2O), in 2022 was reduced by 0.28 compared to 2017. On other hand, the substitution acidity (pH – KCl) was reduced by 0.49 after 5 years. The results for CaCO3 show that the soils are generally carbonate-free or weakly carbonated , well supplied with humus and the percentage of contetnt of N decreased by 21.91% in the five-year period. Low content of easily accessible phosphorus was identified in both year in over 50 percentage of the soil samples while mostly soil samples are well supplied with easily accessible potassium.
土壤分析提供了有关土壤质量和使土壤更好和获得高作物产量所需的养分输入的信息。本文的研究包括2017年和2022年Požarevac城市更大范围内土壤肥力参数的分析。土壤分析表明,2022年土壤平均酸度(即土壤水溶液pH值(pH - H2O))比2017年降低0.28。另一方面,5年后取代酸度(pH - KCl)降低了0.49。CaCO3结果表明,5年期间,土壤总体为无碳酸盐或弱碳酸盐,腐殖质充足,N含量百分比下降21.91%。在这两年中,50%以上的土壤样品易接近磷含量低,而大多数土壤样品易接近钾含量充足。
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引用次数: 0
POMOLOGICAL PROPERTIES OF SELECTED WALNUT GENOTYPES FROM THE NATURAL POPULATION 自然群体中选定核桃基因型的形态学特性
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.143j
Ivana Jasnić, S. Janković, D. Janković, D. Milatovic, D. Grcak, M. Grcak
The pomological characteristics of selected walnut genotypes from the natural population in the municipality of Leposavić were examined. The study included 33 walnut genotypes from the natural population in the valley of the river Ibar. Due to the permanent generative reproduction, the walnut population is very heterogeneous. The main goal of the research is to find and describe promising genotypes that can be used in breeding work or for establishing new plantations.Obtained results showed that inthe natural population of walnuts, the genotypes of poorer traits predominate, but several genotypes of exceptional characteristics weresingled out, which are interesting for further research.
研究了莱波萨维奇市自然种群中选定的核桃基因型的形态学特征。该研究包括来自伊巴尔河流域自然种群的33种核桃基因型。由于永久的生殖繁殖,核桃种群具有很强的异质性。这项研究的主要目标是发现和描述有前景的基因型,这些基因型可用于育种工作或建立新的人工林。结果表明,在核桃自然群体中,较差性状的基因型占主导地位,但也发现了一些特殊性状的基因型,值得进一步研究。
{"title":"POMOLOGICAL PROPERTIES OF SELECTED WALNUT GENOTYPES FROM THE NATURAL POPULATION","authors":"Ivana Jasnić, S. Janković, D. Janković, D. Milatovic, D. Grcak, M. Grcak","doi":"10.46793/sbt28.143j","DOIUrl":"https://doi.org/10.46793/sbt28.143j","url":null,"abstract":"The pomological characteristics of selected walnut genotypes from the natural population in the municipality of Leposavić were examined. The study included 33 walnut genotypes from the natural population in the valley of the river Ibar. Due to the permanent generative reproduction, the walnut population is very heterogeneous. The main goal of the research is to find and describe promising genotypes that can be used in breeding work or for establishing new plantations.Obtained results showed that inthe natural population of walnuts, the genotypes of poorer traits predominate, but several genotypes of exceptional characteristics weresingled out, which are interesting for further research.","PeriodicalId":271044,"journal":{"name":"1st INTERNATIONAL SYMPOSIUM ON BIOTECHNOLOGY : proceedings","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121773965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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1st INTERNATIONAL SYMPOSIUM ON BIOTECHNOLOGY : proceedings
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