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NUTRITIONAL VALUE OF COLD-PRESSED SUNFLOWER OIL 冷榨向日葵油的营养价值
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.429s
Aleksandra S. Stojićević, B. Rabrenovic, M. Antic
The aims of this study were to investigate nutritional value of coldpressed sunflower oil produced in the Republic of Serbia. Composition of fatty acids was determinated and, based on individual fatty acid content, nutritional indices are calculated. Tocopherol composition and total content of carotenoids and chlorophylls were investigated as well. The results indicate that examined oil is rich in essential linoleic acid and with excellent values of nutritional indices. Unfavorable n-6/n-3 ratio is caused by low n-3 fatty acids content which is characteristic for sunflower oil. Total tocopherol content was unexpected low while content of pigments was characteristic for this type of oil
本研究的目的是调查塞尔维亚共和国生产的冷榨葵花籽油的营养价值。测定了脂肪酸的组成,并根据单个脂肪酸的含量计算了营养指标。研究了生育酚的组成、类胡萝卜素和叶绿素的总含量。结果表明,所检油含有丰富的必需亚油酸,具有优良的营养指标。葵花籽油的特点是n-3脂肪酸含量低,导致n-6/n-3比不理想。总生育酚的含量出乎意料的低,而色素的含量是这类油的特征
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引用次数: 0
THE ANTIOXIDANT POTENTIAL OF CONVECTIVE AND MICROWAVE-DRIED RASPBERRIES 对流和微波干燥覆盆子的抗氧化潜力
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.445p
Valerija Pantelić, N. Miletić, V. Milovanović, I. Đurović, M. Petković
The present study aimed to evaluate the effect of convective and microwave drying on bioactive compounds in raspberries (Rubus idaeus L.) cv. Willamette and Tulameen. Fruits were dehydrated in the convective dryer at temperatures 50 °C and 70 °C and microwave oven at power levels (90, and 240 W). The highest percentage of anthocyanin (11.6 %) and polyphenols (25 %) was retention in microwave-dried Willamette at 90 W. The microwave-dried Willamette at 90 W also had the highest antioxidant potential of 1.53 ± 0.26 mmol TE/100g dry matter.
本研究旨在探讨对流干燥和微波干燥对覆盆子生物活性物质的影响。威拉米特和图拉明。在50°C和70°C的对流干燥机和功率分别为90和240 W的微波炉中对水果进行脱水。在功率为90 W的微波干燥条件下,花青素(11.6%)和多酚(25%)的保留率最高。90 W微波干燥的威拉米特抗氧化能力最高,为1.53±0.26 mmol TE/100g干物质。
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引用次数: 0
THE ROLE OF COBALT IN FORAGE LEGUMES 钴在饲用豆科植物中的作用
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.105t
D. Tomić, V. Stevović, M. Madić, Miloš Marjanović, N. Pavlović, Đ. Lazarević, M. Petrović, V. Zornić, J. Knežević
The growth and metabolism of plants, especially on acidic soils, largely depend on the concentration of cobalt (Co) in the soil, i.e. the rhizosphere. An optimal supply of cobalt is essential for N2 fixation of Rhizobium bacteria that are in symbiotic relationships with leguminous plants, influencing their better growth and supplying them with nitrogen. When there is a lack of Co in the plant, the organic production of legumes falls. Indirectly or directly, Co also affects other metabolic processes in plants. The aim of the work was to analyze the importance of optimal provision of forage legumes with cobalt for obtaining high and quality yields of forage and seeds.
植物的生长和代谢,特别是在酸性土壤上,很大程度上取决于土壤(即根际)中钴(Co)的浓度。钴的最佳供应对于与豆科植物共生的根瘤菌固氮至关重要,影响其更好的生长并为其提供氮。当植物中缺乏Co时,豆科植物的有机产量就会下降。Co还间接或直接影响植物的其他代谢过程。本研究的目的是分析饲用豆科植物中钴的优化供给对获得高质量的饲料和种子产量的重要性。
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引用次数: 0
COMPARATIVE STUDY OF PRODUCTIVITY AND FRUIT QUALITY OF STRAWBERRY CULTIVAR ‘SENGA SENGANA’ GROWN IN THE OPEN FIELD AND PLASTIC-GREENHOUSE 露天栽培和大棚栽培“生果”草莓产量和果实品质的比较研究
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.157t
J. Tomić, B. Rilak, M. Pešaković, Žaklina Karaklajić Stajić, S. Paunović
To identify and compare the differences in productivity and fruit quality of strawberry cultivar ‘Senga Sengana’ grown in open field and protected area fruits were harvested in 2021 in the region of Western Serbia. The yield, physical (fruit weight, dimensions, firmness), chemical (total soluble solids (TSS), total (TS) and invert sugars (IS), sucrose (SUC), titrable acids (TA), pH, sweetness index (TS/TA)) and nutritive traits (vitamin C, total phenols, total anthocyanins and antioxidative activity) of the fruits were analyzed. Significantly higher yield per area unit, fruit weight and length, TSS, sugars, organic acids, sweetness index and nutritive qulity were recorded in the fruits from protected area. Growing strawberries in a protected area, in addition to ensuring a safe yield, also has a positive effect on both the sensory and nutritional composition of the fruit.
为了确定和比较在开放地和保护区种植的草莓品种“Senga Sengana”的生产力和果实质量的差异,于2021年在塞尔维亚西部地区收获了水果。分析了果实的产量、物理性状(果实重量、尺寸、硬度)、化学性状(总可溶性固形物(TSS)、总糖(TS)和转化糖(IS)、蔗糖(SUC)、可滴定酸(TA)、pH、甜度指数(TS/TA))和营养性状(维生素C、总酚类、总花青素和抗氧化活性)。保护区果实的单产、单果重长、TSS、糖、有机酸、甜度指数和营养品质均有显著提高。在保护区种植草莓,除了确保安全产量外,对水果的感官和营养成分也有积极的影响。
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引用次数: 0
NPK FERTILIZER ADDITION EFFECT ON „NARDUS STRICTA“ TYPE GRASSLAND IN KOPAONIK MOUNTINE 氮磷钾肥料添加对科波尼丘山“狭窄nardus”型草地的影响
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.099z
V. Zornić, M. Petrović, S. Babić, Đ. Lazarević, Vesna Đurović, D. Sokolović, D. Tomić
This study examines how the addition of NPK fertilizers impacts the change in Nardus stricta type grasslands. The investigation was carried out on the mountain Kopaonik between 2009 and 2012. The effects of four fertilizing treatments: control; N60 (N60P60K60); N90 (N90P60K60); N120 (N120P60K60) on plant species composition, Shannon evenness, and EGQ (evaluation grassland quality index) were researched. The control treatment was dominated by Nardus stricta species, while Festuca rubra and Agrostis capillaris presence was a feature of fertilizing treatments. The highest nitrogen intake (N120) had Shannon evenness that was very similar to that of the control. All fertilizing treatments resulted in increasing forage value.
本研究探讨了氮磷钾肥料的添加对赤豆草类型草地变化的影响。这项调查是在2009年至2012年期间在科帕奥尼克山进行的。四种施肥处理的效果:控制;N60 (N60P60K60);N90 (N90P60K60);研究了N120 (N120P60K60)对草地植物种类组成、香农均匀度和草地质量评价指标EGQ的影响。对照处理以窄水杨为主,施肥处理以红羊茅和毛缕草为主。最高氮摄入量(N120)的香农均匀度与对照非常相似。所有施肥处理均能提高饲用价值。
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引用次数: 0
APPLICATION OF SEQUENTIAL EXTRACTION TO DETERMINE THE COMPOSITION OF ZEOLITE FOR ITS SAFE USE IN AGRICULTURE 顺序萃取法测定沸石成分在农业中的安全应用
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.259p
G. Petrovic, V. Mitić, J. Nikolić, M. Mitić, M. Dimitrijević, A. Đorđević, V. S. Stankov Jovanović
Zeolites are alumo-silicate minerals, commonly used industry, medicine and agriculture. Their application in agriculture is based on the fact that they can increase crop yield and promote nutrient use efficiency. In order to determine is zeolite (clinoptilolite) safe for use in agriculture, regarding its elemental analysis, sequential extraction followed by Inductively coupled plasma - optical emission spectrometry analysis is performed. Sequential extraction perrmited insight into elemental composition of clinoptilolite, through various extraction phases – exchagable, carbonate bounded, metals bound to Fe and Mn oxides, metals bound to organic matter and residual phase. The most abundant elements in first phase are Ca, K, Mg and Na (with a concentration greater than 100 ppm). Similar observation wa made for second phase of sequential extraction, but in this phase high content of Mn (232.6±0.7 ppm) was also noticed. In those two phases, that represents cations available to plants, no toxic elements exceeded permissible values prescribed by Serbian law. However, he content of Be (1.822±0.002 ppm) in sample obtained from third phase exceeds the concentration limit prescribed by Serbian law, which might be potentially dangerous, since Be could be adopted by plant and transferred to human through food chain. Concentration of toxic Cd was twice as higher compared to law limitations in residual phase. Bearing in mind obtained results, clinoptilolite analyzed in this study could be used in agriculture, but with continuous soil properties monitoring, since toxic elements could be mobile under various reducing and pH conditions.
沸石是铝硅酸盐矿物,常用于工业、医药和农业。它们在农业上的应用是基于它们能提高作物产量和促进养分利用效率。为了确定沸石(斜沸石)在农业上的安全使用,对其元素分析进行了顺序提取和电感耦合等离子体-光学发射光谱分析。通过不同的萃取相——可交换的、碳酸盐结合的、与Fe和Mn氧化物结合的金属、与有机物结合的金属和残余相——顺序萃取可以深入了解斜发沸石的元素组成。第一相中含量最多的元素是Ca、K、Mg和Na(浓度大于100ppm)。在第二阶段的顺序萃取中也有类似的观察,但在这一阶段中Mn的含量也很高(232.6±0.7 ppm)。在这两个阶段中,没有任何有毒元素超过塞尔维亚法律规定的容许值。然而,第三相样品中Be的含量(1.822±0.002 ppm)超过塞尔维亚法律规定的浓度限值,可能存在潜在危险,因为Be可以被植物吸收,并通过食物链转移给人类。残留相中有毒镉的浓度比法定限值高两倍。考虑到所获得的结果,本研究分析的斜发沸石可以用于农业,但需要连续监测土壤性质,因为有毒元素在各种还原性和pH条件下可以移动。
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引用次数: 0
INVESTIGATION OF ZINC CONTENT IN AGRICULTURAL LAND IN THE AREA OF THE CITY OF SOMBOR 沈阳市农用地锌含量调查
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.077z
Danijela Žunić, V. Sabadoš
Zinc belongs to the group of heavy metals, it is an integral part of a large number of fragments. The toxicity of heavy metals is reflected in morphological and anatomical changes in living tissues, while on the other hand, efficient absorption of essential metals is necessary for the normal growth and development of plants and animals. Agricultural Extension Service analyzed the agricultural land for zinc content in the soil, and it was determined that it ranged from 26.76 mg/kg to 228.20 mg/kg. The most common zinc content at a depth of 0 to 30 cm is in the range of 60 to 80 mg/kg, in 31.41% of the tested samples of agricultural land in the area of the city of Sombor, while for the zinc content below 30 mg/kg, only 0.64 % of the country.
锌属于重金属的范畴,它是大量碎片的组成部分。重金属的毒性一方面体现在活组织的形态和解剖变化上,另一方面,有效吸收必需金属是动植物正常生长发育所必需的。农业推广服务处对农用地土壤锌含量进行了分析,测定锌含量在26.76 ~ 228.20 mg/kg之间。在松博尔市地区31.41%的农业用地测试样本中,深度为0至30厘米的最常见锌含量在60至80毫克/公斤之间,而锌含量低于30毫克/公斤的国家只有0.64%。
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引用次数: 0
EFFECT OF ELEVATED HEAT AND HUMIDITY ON CHEWING ACTIVITY, YIELD AND CHEMICAL COMPOSITION OF MILK IN LACTATING COWS 1ST INTERNATIONAL SYMPOSIUM ON BIOTECHNOLOGY (2023)202353ЗБОРНИЦИ 高温高湿对泌乳奶牛咀嚼活动、产量和牛奶化学成分的影响[j] .首届国际生物技术研讨会(2023)202353ЗБОРНИЦИ
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.195s
Blagoje Stojković, B. Stojanovic, N. Đorđević, V. Davidovic
The objective of this study was to investigate the influence of surrounding temperature and humidity in different periods of the year on eating and rumination time on ilk yield and chemical composition in Simmental cows at late lactation (over 150 days in milk, DIM). Ambient temperature and relative humidity were registered every hoursing data logger Testo 174H. Rumination time and eating time data were collected using an automatic system – GEA CowScout Neck. It was noticed that different values of THI temperature and humidity index) affect eating time (p<0.01), rumination time (p<0.01), milk yield (p<0.05) as well as milk fat content (p<0.05). The average value of THI1 (52.55) had a positive effect on eating time (307.2 min/day), rumination time (384 min/day), milk yield (28.97 kg/day), and milk fat content (4.25%), compared to the average value of THI2 (72.88), where the observed eating time was 259.2 min/day, rumination time 343 min/day, milk yield 26.21 kg/day and milk fat content 4.11%. An increased chewing time was achieved at lower value of THI, as well as higher milk yield and improved milk composition.
本研究旨在研究一年中不同时期环境温湿度对进食和反刍时间对泌乳后期(泌乳150 d以上)西门塔尔奶牛产奶量和化学成分的影响。每个房屋数据记录仪Testo 174H都记录了环境温度和相对湿度。反刍时间和进食时间数据采用GEA CowScout颈部自动系统采集。不同THI温湿指数值对采食时间(p<0.01)、反刍时间(p<0.01)、产奶量(p<0.05)和乳脂含量(p<0.05)均有影响。采食时间为259.2 min/d,反刍时间为343 min/d,产奶量为26.21 kg/d,乳脂含量为4.11%;采食时间为259.2 min/d,反刍时间为384 min/d,产奶量为28.97 kg/d, th2平均值为72.88,th1平均值(52.55)对采食时间(307.2 min/d)、乳脂含量(4.25%)有积极影响。在较低的THI值下,咀嚼时间延长,产奶量提高,乳成分改善。
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引用次数: 0
LENGTH-WEIGHT RELATIONSHIP OF NINE FISH SPECIES FROM GRUŽA RESERVOIR (CENTRAL SERBIA) 塞尔维亚中部gruŽa水库九种鱼类的长度-重量关系
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.277k
Nataša M. Kojadinović, Milena D. Radenković, Simona R. Đuretanović, Aleksandra M. Milošković, Marija M. Jakovljević, T. Veličković, V. Simić
Length–weight relationship give information on the condition and growth patterns of fish. This study reports length– weight relationships for Abramis brama (Linnaeus, 1758), Alburnus alburnus (Linnaeus, 1758), Carassius auratus (Linnaeus, 1758), Cyprinus carpio (Linnaeus, 1758), Rutilus rutilus (Linnaeus, 1758), Silurus glanis (Linnaeus, 1758), Ameiurus nebulosus (Le Sueur, 1819), Perca fluviatlis (Linnaeus, 1758) and Sander lucioperca (Linnaeus, 1758). Specimens were collected from 2007 to 2013 in Gruza Reservoir (Central Serbia). The b values in the LWRs of analyzyed fish varied between 2.274 and 3.213.
鱼类的体长-体重关系提供了有关鱼类状况和生长模式的信息。林奈,1758 年)、鲤鱼(林奈,1758 年)、鲫鱼(林奈,1758 年)、鲤鱼(林奈,1758 年)、鲫鱼(林奈,1758 年)、鲤鱼(林奈,1758 年)、鲫鱼(林奈,1758 年)、鲤鱼(林奈,1758 年)、鲫鱼(林奈,1758 年)、鲤鱼(林奈,1758 年)、鲫鱼(林奈,1758 年)和鲤鱼(林奈,1758 年)。标本于 2007 年至 2013 年在格鲁扎水库(塞尔维亚中部)采集。被分析鱼类的 LWR 中的 b 值介于 2.274 和 3.213 之间。
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引用次数: 0
INSIGHTFUL APPLICATION OF HERBAL EXTRACTS IN THE PREVENTION AND TREATMENT OF ANIMAL DISEASES AND IMPROVEMENT OF MEAT QUALITY AND SAFETY 草药提取物在预防和治疗动物疾病以及改善肉类品质和安全方面的深刻应用
Pub Date : 2023-03-01 DOI: 10.46793/sbt28.181k
V. Kurćubić, S. Stajić, N. Miletić, M. Petković
In an indirect way, through animal nutrition or selection, we can influence the composition and quality of muscle and fat tissue, and thus the nutritional and functional value of meat. The process is longer and is not fully controlled yet. Direct processes improve nutritional properties by adding components with functional properties and/or reducing or removing ingredients that may negatively affect health. Herbal raw materials and extracts, by-products and wastes from fruit and vegetable processing can modify feed in order to achieve a stable health status and preserve animal well-being and sensory quality of meat, with an extended shelf life.
通过动物营养或选择,我们可以间接地影响肌肉和脂肪组织的组成和质量,从而影响肉的营养和功能价值。这个过程更长,而且还没有完全控制。直接工艺通过添加具有功能特性的成分和/或减少或去除可能对健康产生负面影响的成分来改善营养特性。草药原料和提取物、水果和蔬菜加工的副产品和废物可以修饰饲料,以达到稳定的健康状态,保持动物福利和肉类的感官质量,延长保质期。
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引用次数: 0
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1st INTERNATIONAL SYMPOSIUM ON BIOTECHNOLOGY : proceedings
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