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Effects of yellow and green light stress on emergence, feeding and mating of Anomala corpulenta Motschulsky and Holotrichia parallela Motschulsky (Coleoptera: Scarabaeidae) 黄光和绿光胁迫对褐斑金龟和褐斑金龟羽化、取食和交配的影响(鞘翅目:金龟科)
IF 2.4 2区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.25165/j.ijabe.20231601.7639
Yue-li Jiang, Qiuying Huang, Guoshu Wei, Zhongjun Gong, Tong Li, J. Miao, Ruijie Lu, Shiqiong Mei, Xueqin Wang, Y. Duan, Yu-Qing Wu, Chuantao Lu
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引用次数: 0
Optimizing water-saving irrigation schemes for rice (Oryza sativa L.) using DSSAT-CERES-Rice model 基于DSSAT-CERES-Rice模型的水稻节水灌溉方案优化
IF 2.4 2区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.25165/j.ijabe.20231602.7361
Shikai Gao, Qiongqiong Gu, X. Gong, Yanbin Li, Shao-feng Yan, Yuanyuan Li
: Rice is one of the major crops in China, and enhancing the rice yield and water use efficiency is critical to ensuring food security in China. Determining how to optimize a scientific and efficient irrigation and drainage scheme by combining existing technology is currently a hot topic. Crop growth models can be used to assess actual or proposed water management regimes intended to increase water use efficiency and mitigate water shortages. In this study, a CERES-Rice model was calibrated and validated using a two-year field experiment. Four irrigation and drainage treatments were designed for the experiment: alternate wetting and drying (AWD), controlled drainage (CD), controlled irrigation and drainage for a low water level (CID1), and controlled irrigation and drainage for a high water level (CID2). According to the indicators normalized root mean square error (NRMSE) and index of agreement ( d ), the calibrated CERES-Rice model accurately predicted grain yield (NRMSE=6.67%, d =0.77), , shoot biomass (NRMSE=3.37%, d =0.77), actual evapotranspiration ( ET a ) (NRMSE=3.83%, d =0.74), irrigation volume (NRMSE=15.56%, d =0.94), and leaf area index (NRMSE=9.69%, d =0.98) over 2 a. The calibrated model was subsequently used to evaluate rice production in response to the four treatments (AWD, CD, CID1, and CID2) under 60 meteorological scenarios which were divided into wet years (22 a), normal years (16 a), and dry years (22 a). Results showed that the yield of AWD was the largest among four treatments in different hydrological years. Relative to that of AWD, the yield of CD, CID1, and CID2 were respectively reduced by 5.7%, 2.6%, 8.7% in wet years, 9.2%, 2.3%, 8.6% in normal years, and 9.2%, 3.8%, 3.9% in dry years. However, rainwater use efficiency and irrigation water use efficiency were the greatest for CID2 in different hydrological years. The entropy-weighting TOPSIS model was used to optimize the four water-saving irrigation schemes in terms of water-saving, labor-saving and high-yield, based on the simulation results of the CERES-Rice model in the past 60 a. These results showed that CID1 and AWD were optimal in the wet years, CID1 and CID2 were optimal in the normal and dry years. These results may provide a strong scientific basis for the optimization of water-saving irrigation technology for rice.
水稻是中国的主要作物之一,提高水稻产量和水分利用效率对确保中国的粮食安全至关重要。如何结合现有技术优化科学高效的排灌方案是当前研究的热点问题。作物生长模型可用于评估旨在提高用水效率和缓解水资源短缺的实际或拟议的水资源管理制度。在这项研究中,CERES-Rice模型通过为期两年的田间试验进行了校准和验证。试验设计4种灌排处理:干湿交替(AWD)、控制排水(CD)、低水位控制灌排(CID1)和高水位控制灌排(CID2)。根据归一化均方根误差(NRMSE)和一致性指数(d),校正后的CERES-Rice模型准确预测了2 a内的籽粒产量(NRMSE=6.67%, d =0.77)、茎部生物量(NRMSE=3.37%, d =0.77)、实际蒸散量(ET a) (NRMSE=3.83%, d =0.74)、灌水量(NRMSE=15.56%, d =0.94)和叶面积指数(NRMSE=9.69%, d =0.98)。CID1和CID2)在60个气象情景下,分为湿润年(22 a)、正常年(16 a)和干旱年(22 a)。结果表明,在不同水文年的4个处理中,AWD产量最大。与AWD相比,CD、CID1和CID2的产量在丰水年分别降低5.7%、2.6%、8.7%,在平水年分别降低9.2%、2.3%、8.6%,在干旱年分别降低9.2%、3.8%、3.9%。但不同水文年CID2的雨水利用效率和灌溉水利用效率均最高。以CERES-Rice模型近60 a的模拟结果为基础,利用熵权TOPSIS模型对4种节水灌溉方案在节水、省力和高产方面进行优化。结果表明,CID1和AWD方案在丰水年最优,CID1和CID2方案在丰水年和干旱年最优。研究结果可为优化水稻节水灌溉技术提供有力的科学依据。
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引用次数: 0
Simple decision-making model for orchard air-assisted spraying airflow 果园空气辅助喷洒气流的简单决策模型
IF 2.4 2区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.25165/j.ijabe.20231602.6849
Xiang Wang, Yuru Feng, W. Fu, Jiangtao Qi, Jianli Song
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引用次数: 1
Determination of energy use efficiency and greenhouse gas emissions in peach production 桃生产中能源利用效率和温室气体排放的测定
IF 2.4 2区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.25165/j.ijabe.20231602.7917
Cihan Demir, Osman Gökdoğan
: The purpose of this study was to determine the energy use efficiency and greenhouse gas (GHG) emissions in peach production that took place in Kırklareli province of Turkey during the 2020-2021 production season. This study included calculations of energy input, energy output, energy use efficiency, specific energy, energy productivity, net energy, energy input types, GHG emissions and GHG ratio. Survey, observation and data calculations are related to the 2020-2021 production season. The data obtained from the study were collected from 16 different farms (reachable) through face-to-face surveys with full count method. Energy input and energy output were calculated as 19 570.58 MJ/hm 2 and 19 471.94 MJ/hm 2 , respectively. With regards to production inputs, 55.70% of the energy inputs consisted of chemical fertilizers energy (10 900.03 MJ/hm 2 ), 9.46% consisted of chemicals energy (1852.10 MJ/hm 2 ), 9.32% consisted of human labour energy (1823.13 MJ/hm 2 ), 7.65% consisted of electricity energy (1497.28 MJ/hm 2 ), 6.91% consisted of diesel fuel energy (1351.52 MJ/hm 2 ), 4.73% consisted of irrigation water energy (926.10 MJ/hm 2 ), 3.43% consisted of machinery energy (671.98 MJ/hm 2 ), 1.88% consisted of transportation energy (367.72 MJ/hm 2 ), 0.88% consisted of farmyard manure energy (171.80 MJ/hm 2 ) and 0.05% consisted of lime energy (8.94 MJ/hm 2 ). Energy use efficiency, specific energy, energy productivity and net energy were calculated as 0.99, 1.91 MJ/kg, 0.52 kg/MJ and –98.64 MJ/hm 2 , respectively. The consumed total energy input in production was classified as 28.60% direct energy, 71.40% indirect energy, 14.93% renewable energy and 85.07% non-renewable. Total GHG emissions and GHG ratio were calculated as 1683.24 kgCO 2-eq /hm 2 and 0.16 kg CO 2-eq /kg, respectively.
本研究的目的是确定2020-2021年生产季节土耳其Kırklareli省桃子生产的能源利用效率和温室气体(GHG)排放。本研究包括能源投入、能源产出、能源利用效率、比能、能源生产率、净能、能源投入类型、温室气体排放和温室气体比率的计算。调查、观察和数据计算与2020-2021年的生产季节有关。通过面对面调查,采用全计数法,从16个不同的农场(可达)收集数据。能量输入和能量输出分别为19 570.58 MJ/hm 2和19 471.94 MJ/hm 2。在生产投入中,55.70%为化肥能(10 900.03 MJ/hm 2), 9.46%为化学能(1852.10 MJ/hm 2), 9.32%为人力能(1823.13 MJ/hm 2), 7.65%为电能(1497.28 MJ/hm 2), 6.91%为柴油能(1351.52 MJ/hm 2), 4.73%为灌溉水能(926.10 MJ/hm 2), 3.43%为机械能(671.98 MJ/hm 2)。其中运输能(367.72 MJ/hm 2)占1.88%,农家肥能(171.80 MJ/hm 2)占0.88%,石灰能(8.94 MJ/hm 2)占0.05%。能量利用效率、比能、能量生产力和净能分别为0.99、1.91 kg、0.52 kg/MJ和-98.64 MJ/hm 2。生产中消耗的总能源投入中直接能源占28.60%,间接能源占71.40%,可再生能源占14.93%,不可再生能源占85.07%。总温室气体排放量和温室气体比值分别为1683.24 kgCO 2-eq /hm 2和0.16 kgCO 2-eq /kg。
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引用次数: 0
Design of a high-voltage electrostatic ultrasonic atomization nozzle and its droplet adhesion effects on aeroponically cultivated plant roots 高压静电超声雾化喷嘴的设计及其对气耕植物根系的粘附效应
IF 2.4 2区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.25165/j.ijabe.20231602.7222
Jianmin Gao, Yinan Guo, Mazhar Hussain Tunio, Xiangchao Chen, Zhijian Chen
: In the process of aeroponics cultivation, the atomizer is one of the most important influencing factors on the cultivation process. This study presented the design of an ultrasonic atomization nozzle using contact charging and a root droplet adhesion test rig. The purpose of this study was to reveal the relationship between the main operating parameters of the high-voltage electrostatic ultrasonic atomization nozzle and the atomization effect using droplet adhesion measurements. In this study, the ultrasonic effect of nozzle was achieved by using Laval tube, and the design of the key parameters for the high-voltage electrostatic ultrasonic atomization nozzle were inlet pressure, electrostatic voltage root core electrode material and spray distance; the droplet size variation and root adhesion patterns were obtained through experiments. The best operating parameters were analyzed by using the orthogonal test method, and the droplet deposition distribution of the root system at different scales was investigated in the atomization chamber. The test results revealed that when the root core electrode material was coppe and the nozzle working parameters were at 0.4 MPa of inlet pressure, at 1.75 m the spray distance, at 12 kV of the electrostatic voltage, the root system has the highest droplet adhesion.
在气培栽培过程中,雾化器是影响栽培过程的重要因素之一。本文设计了一种接触式超声雾化喷嘴和根液滴黏附试验台。通过液滴黏附测量,揭示高压静电超声雾化喷嘴主要工作参数与雾化效果的关系。本研究采用拉瓦尔管实现喷嘴的超声效果,高压静电超声雾化喷嘴的关键参数设计为进口压力、静电电压根芯电极材料和喷雾距离;通过实验得到了液滴大小变化规律和根系粘附规律。采用正交试验法对最佳操作参数进行了分析,并对雾化室内不同尺度下根系液滴沉积分布进行了研究。试验结果表明,当根芯电极材料为铜,喷嘴工作参数为0.4 MPa进口压力、1.75 m喷雾距离、12 kV静电电压时,根芯电极的液滴粘附力最高。
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引用次数: 0
Effects of spray adjuvants and operation modes on droplet deposition and elm aphid control using an unmanned aerial vehicle 喷雾佐剂和操作方式对无人机飞沫沉积和榆树蚜虫防治的影响
IF 2.4 2区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.25165/j.ijabe.20231602.7424
Zechen Dou, Zhihao Fang, Xiaoqiang Han, Muhammad Zeeshan, Yapeng Liu, Y. Lan
: A conventional spraying mode and a fully autonomous fruit tree operation mode using a model DJ T30 unmanned aerial vehicle (UAV) were used to control aphids control on elm trees and to clarify the distribution of droplets in elm trees sprayed by a UAV. The effects of six aviation spray adjuvants on elm canopy droplet deposition and aphid control were evaluated. ImageJ software was used to analyze and measure the droplet density and deposition of water sensitive paper in two modes; this was done to calculate the droplet uniformity, depositional penetration, and droplet penetration, and to verify the aphid control effect. The results showed that the droplet density increased by 79.7%-100.7% in the upper canopy and 0-394.1% in the lower canopy without adjuvants in the fully autonomous fruit tree operation mode. The upper canopy deposits increased by 65.7%-179.3%, and the lower canopy increased by 0-152.8%. When adjuvants were added, the droplet density in the upper canopy increased by 49.7-56.1% using Jiexiaofeng (JXF), and the lower canopy increased by 138.2%-177.8% using JXF, 45.8%-141.3% using Beidatong (BDT), 45.5%-92.9% using Gongbei (GB), 0-93.5% using Maisi (MS), and 0-95.2% using Manniu (MN). The deposits of the upper canopy increased by 888.1-1 154.2% using JXF, 0-1 298.3% using MN, 0-343.9% using BDT, 0-422.5% using GB, 0-580.3% using MS. The lower canopy increased by 746.4%-1 426.0% using JXF, 226.2%- 231.0% using BDT, 435.8%-644.0% using GB, 255.0%-322.4% using MS, and 249.3%-360.0% using MN. When JXF was added, the droplet uniformity, droplet penetration and depositional penetration were better than when using other adjuvants. The effects of JXF, BDT and GB in controlling aphids was significantly better than other adjuvants ( p <0.05). The following control effects were observed; 94.1% with JXF, 93.1% with BDT, and 93.3% with GB after 3 d of application, and 97.9% with JXF, 95.6% with BDT, and 97.1% with GB after 7 d of application. At the same time, the application of the fully autonomous fruit tree operation mode and JXF can effectively improve the density and deposits, which will produce a superposition optimization effect. Our study focuses on the prevention and control of elm aphid infestations based on the operation mode of a UAV and aviation spray adjuvants, which can provide a baseline for the control of diseases and insect pests using UAVs in agriculture and forestry.
:采用常规喷洒模式和DJ T30型无人机全自动果树操作模式对榆树蚜虫进行控制,并对无人机喷洒的榆树飞沫分布情况进行研究。评价了6种航空喷雾佐剂对榆树树冠雾滴沉积和蚜虫防治的效果。采用ImageJ软件分析和测量两种模式下水敏纸的液滴密度和沉积情况;为了计算雾滴均匀性、沉积穿透性和雾滴穿透性,验证雾滴防治蚜虫的效果。结果表明,在无佐剂的完全自主果树运行模式下,上冠层雾滴密度提高79.7% ~ 100.7%,下冠层雾滴密度提高0 ~ 394.1%。上层冠层沉积物增加65.7% ~ 179.3%,下层冠层沉积物增加0 ~ 152.8%。添加佐剂后,洁小凤(JXF)的上冠层雾滴密度增加49.7% ~ 56.1%,洁小凤(JXF)的下冠层雾滴密度增加138.2% ~ 177.8%,北大通(BDT)雾滴密度增加45.8% ~ 141.3%,宫北(GB)雾滴密度增加45.5% ~ 92.9%,麦丝(MS)雾滴密度增加0 ~ 93.5%,满牛(MN)雾滴密度增加0 ~ 95.2%。JXF、MN、BDT、GB、MS分别增加了888.1 ~ 154.2%、0 ~ 1 298.3%、0 ~ 343.9%、0 ~ 422.5%、0 ~ 580.3%;JXF、BDT、435.8% ~ 644.0%、MS、249.3% ~ 360.0%,分别增加了746.4% ~ 426.0%。添加JXF时,液滴均匀性、滴入性和沉积性均优于其他佐剂。JXF、BDT和GB对蚜虫的防治效果显著优于其他佐剂(p <0.05)。观察到以下控制效果:施用3 d后,JXF为94.1%,BDT为93.1%,GB为93.3%;施用7 d后,JXF为97.9%,BDT为95.6%,GB为97.1%。同时,全自主果树操作模式和JXF的应用,可以有效地提高密度和沉淀,将产生叠加优化效果。本研究基于无人机操作模式和航空喷雾佐剂对榆树蚜虫的防治进行了研究,可为无人机在农林病虫害防治中的应用提供基准。
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引用次数: 0
Detection of the foreign object positions in agricultural soils using Mask-RCNN 基于Mask-RCNN的农业土壤异物位置检测
IF 2.4 2区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.25165/j.ijabe.20231601.7173
Yuanhong Li, Chaofeng Wang, Congyue Wang, Xiaoling Deng, Zuoxi Zhao, Shengde Chen, Yubin Lan
{"title":"Detection of the foreign object positions in agricultural soils using Mask-RCNN","authors":"Yuanhong Li, Chaofeng Wang, Congyue Wang, Xiaoling Deng, Zuoxi Zhao, Shengde Chen, Yubin Lan","doi":"10.25165/j.ijabe.20231601.7173","DOIUrl":"https://doi.org/10.25165/j.ijabe.20231601.7173","url":null,"abstract":"","PeriodicalId":13895,"journal":{"name":"International Journal of Agricultural and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72460622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Analysis of the metering performance for typical shape maize seeds using DEM 基于DEM的典型形状玉米种子计量性能分析
IF 2.4 2区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.25165/j.ijabe.20231601.6813
L. Shi, Wuyun Zhao, Wei Sun, Xiaoping Yang, Guanping Wang, Shanglong Xin
{"title":"Analysis of the metering performance for typical shape maize seeds using DEM","authors":"L. Shi, Wuyun Zhao, Wei Sun, Xiaoping Yang, Guanping Wang, Shanglong Xin","doi":"10.25165/j.ijabe.20231601.6813","DOIUrl":"https://doi.org/10.25165/j.ijabe.20231601.6813","url":null,"abstract":"","PeriodicalId":13895,"journal":{"name":"International Journal of Agricultural and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75332128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
NxO emissions in response to the irrigation lower limits under different irrigation modes in a lettuce field 不同灌溉方式下生菜田氮氧化物排放对灌溉下限的响应
2区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.25165/j.ijabe.20231604.7961
Maomao Hou, Ying Xiao, Qinyuan Zhu, Jingnan Chen, Huan Huang, Qiu Jin, Lin Zhu, Fenglin Zhong
Irrigation has a significant impact on NxO (N2O and NO) emissions from cultivated land, yet the N2O or NO emission among the irrigation lower limits under different irrigation modes has not been well compared. In an irrigated lettuce field, three DR (drip irrigation) lower limits were designed, including 75% (DR1), 65% (DR2) and 55% (DR3) field capacity, and one FI (furrow irrigation) lower limit (65% field capacity). The N2O and NO emission fluxes and soil nitrogen (N) forms were determined, and the linear correlation between these indicators was analyzed. Results showed that under the same irrigation regime, the N2O and NO emissions from furrow irrigation treatment increased by 36.8% and 45.2% respectively compared to that from drip irrigation treatment. The cumulative N2O and NO emissions under DR3 were 30.2% and 28.6% higher than under DR1, respectively. Moreover, DR1 was also the lowest among the four treatments in soil NO3--N concentration. The N2O and NO emission fluxes were more correlated to soil NH4+-N (r=0.88 and 0.76) or NO2--N (r=0.90 and 0.80) concentration than soil NO3--N and soluble organic N, indicating that N2O and NO were mainly produced by the soil nitrification process. When the irrigation regime was the same, N2O and NO emissions were lower with drip irrigation than with furrow irrigation. Besides, drip irrigation with small quota but high frequency reduced N2O and NO emission compared to that with large quota but low frequency. Keywords: nitrous oxide, nitric oxide, drip irrigation, furrow irrigation, soil nitrogen DOI: 10.25165/j.ijabe.20231604.7961 Citation: Hou M M, Xiao Y, Zhu Q Y, Chen J N, Huang H, Jin Q, et al. NxO emissions in response to the irrigation lower limits under different irrigation modes in a lettuce field. Int J Agric & Biol Eng, 2023; 16(4): 159–167.
灌溉对耕地N2O和NO排放有显著影响,但不同灌溉方式下灌溉下限之间的N2O或NO排放差异尚未得到很好的比较。在一个灌溉莴苣田,设计了3个DR(滴灌)下限,包括75% (DR1)、65% (DR2)和55% (DR3)田间容量,以及1个FI(沟灌)下限(65%田间容量)。测定了N2O和NO排放通量与土壤氮形态,并分析了这些指标之间的线性相关关系。结果表明:在相同灌溉方式下,沟灌处理的氮氧化物和一氧化氮排放量比滴灌处理分别增加了36.8%和45.2%;DR3下N2O和NO的累积排放量分别比DR1下高30.2%和28.6%。4个处理中,DR1处理土壤NO3——N浓度最低。N2O和NO排放通量与土壤NH4+-N (r=0.88和0.76)或NO2——N (r=0.90和0.80)浓度的相关性强于土壤NO3——N和可溶性有机氮,说明N2O和NO主要由土壤硝化过程产生。在灌溉方式相同的情况下,滴灌比沟灌的N2O和NO排放更低。此外,与大配额低频率滴灌相比,小配额高频率滴灌减少了N2O和NO的排放。关键词:一氧化二氮,一氧化二氮,滴灌,沟灌,土壤氮DOI: 10.25165/ j.j ijabe.20231604.7961引用本文:侯明明,肖勇,朱庆勇,陈建宁,黄辉,金强,等。不同灌溉方式下生菜田氮氧化物排放对灌溉下限的响应农业与生物工程学报,2023;16(4): 159 - 167。
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引用次数: 0
Drying curve simulation and LF-NMR online monitor of water state in ursolic acid loaded chitosan nanoparticles during microwave freeze drying 载熊果酸壳聚糖纳米颗粒微波冷冻干燥过程中的干燥曲线模拟及LF-NMR在线监测
2区 农林科学 Q1 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.25165/j.ijabe.20231604.7519
Xing Ren, Xu Duan, Weiwei Cao, Lujie Zhao, Guangyue Ren, Panpan Liu
Changes in various states of water in ursolic acid (UA) loaded chitosan nanoparticles were assessed using low-field nuclear magnetic resonance (LF-NMR) during microwave freeze drying (MFD) process, and six thin-layer models were applied to simulate the drying kinetics. UA nanoparticles were dried at different microwave power densities (1 W/g, 2 W/g and 4 W/g). The results showed that three water fractions with different transverse relaxation times (T2) were detected in fresh UA nanoparticles. The T2 relaxation time of water decreased significantly with the increase of drying time at different microwave power densities. And the mutual migration and transformation of water in different states during the drying process of chitosan nanoparticles occurred. Furthermore, mathematical model analysis showed that the Page model provided the best description during the process of UA nanoparticle dried by MFD. The Page model can better simulate the drying kinetics of chitosan nanoparticles dried by MFD, and LF-NMR technology can monitor the changes in water status of UA nanoparticles. The results revealed that LF-NMR can monitor the changes of water in UA nanoparticles during the drying process. Keywords: microwave, drying, chitosan nanoparticles, water distribution DOI: 10.25165/j.ijabe.20231604.7519 Citation: Ren X, Duan X, Cao W W, Zhao L J, Ren G Y, Liu P P. Drying curve simulation and LF-NMR online monitor of water state in ursolic acid loaded chitosan nanoparticles during microwave freeze drying. Int J Agric & Biol Eng, 2023; 16(4): 263-268.
采用低场核磁共振(LF-NMR)技术研究了负载熊果酸(UA)的壳聚糖纳米颗粒在微波冷冻干燥(MFD)过程中不同状态水分的变化,并应用6个薄层模型模拟了壳聚糖纳米颗粒的干燥动力学。在不同的微波功率密度(1 W/g、2 W/g和4 W/g)下对UA纳米颗粒进行干燥。结果表明,在新鲜的UA纳米颗粒中检测到三种不同横向弛豫时间(T2)的水组分。在不同微波功率密度下,水的T2弛豫时间随干燥时间的增加而显著减小。在壳聚糖纳米颗粒干燥过程中,不同状态的水分相互迁移转化。数学模型分析表明,Page模型能较好地描述UA纳米颗粒的MFD干燥过程。Page模型可以较好地模拟MFD干燥的壳聚糖纳米颗粒的干燥动力学,LF-NMR技术可以监测UA纳米颗粒的水分状态变化。结果表明,LF-NMR可以监测UA纳米颗粒干燥过程中水分的变化。关键词:微波,干燥,壳聚糖纳米颗粒,水分分布[DOI: 10.25165/ j.j ijabe.20231604.7519]引用本文:任鑫,段鑫,曹伟伟,赵丽娟,任国勇,刘鹏鹏。负载熊果酸的壳聚糖纳米颗粒微波冷冻干燥过程中水分状态的干燥曲线模拟及低频核磁共振在线监测。农业与生物工程学报,2023;16(4): 263-268.
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引用次数: 0
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International Journal of Agricultural and Biological Engineering
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