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中国蚕学会第九届青年学术研讨会

作者：孟留伟 Liang Yang Jingyv Wang 黄凌霞 College of Animal Sciences Zhejiang University South Taihu Agricultural Technology Extension Center in Huzhou Zhejiang University

To better understand the ripening process of mulberry and find a suitable postharvest storage strategy,it is necessary to visualize the quality variation inside mulberry *** study focuses on fast monitoring the total soluble solids（TSS） variation inside postharvest mulberry fruit using hyperspectral imaging（HSI） *** fruits with different TSS contents were selected at different postharvest periods,and were stored in refrigeration and room temperature as *** the storage,mulberry fruits were cut at longitudinal sections and hyperspectral images of treated and control fruit were obtained by a visible/near infrared（Vis/NIR） HSI *** the spectral image acquisition was completed for each fruit,its reference TSS was determined immediately by a handheld *** last,a robust prediction model between the reflectance spectra of fruits and their TSS references were established using partial least square *** showed that a good correlation was obtained between the reference TSS values and spectral *** quantitative TSS distribution inside mulberry fruit was *** study presents a rapid method of HSI for visualization of TSS distributions in fresh-cut mulberry *** the best of our knowledge,this is the first study on using hyperspectral imaging to measure TSS distributions inside mulberry *** imaging system supported by multivariate image analysis methods is a powerful tool in evaluating and visualizing the TSS distribution inside mulberry fruit at pixel level.

关键词： Postharvest mulberry fruit Hyperspectral imaging total soluble solids Spatial variation

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Dielectric spectroscopy as a potential technique for prediction of kiwifruit quality indices during storage

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Information Processing in Agriculture 2019年第4期6卷 479-486页

作者： Atefeh Fazayeli Saadat Kamgar Seyed Mehdi Nassiri Hassan Fazayeli Miguel de la Guardia Biosystems Engineering Department Shiraz UniversityShirazIran School of Computer Science Universiti Sains Malaysia 11800 USMPulau PinangMalaysia Department of Analytical Chemistry University of Valencia46100 BurjassotSpain

Dielectric spectroscopy has been employed as a simple,low cost and a non-destructive way for prediction of some physicochemical indices of kiwifruit during storage.A parallel-plate capacitor was developed and supplied with sinusoidal voltage waves within a frequency range of 40 kHz–20 *** properties of samples were measured by the dielectric ***,changes associated with fruit ripening properties,including firmness,total soluble solid(TSS)and pH were determined as a function of time at 2*** results showed that storage time significantly affected the quality characteristics of *** neural networks(ANNs)were employed to develop models for prediction of quality indices from dielectric properties at the swept *** property features were selected as inputs while the quality indices including firmness,TSS and pH were chosen as output for the *** obtained models were able to predict the firmness,soluble solids content,and pH of kiwifruit *** predictive models,an ANN with a topology of 20-19-1 gave a perfect capability to predict the kiwifruit firmness with R2 value of *** of this research show that this technique can be used as an efficient and non-destructive method for kiwifruit quality evaluation and monitoring the ripening.

关键词： Kiwifruit Dielectric spectroscopy Firmness total soluble solids pH

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Quality and Shelf Life of Lisboa Lemon within Polystyrene Containers in Refrigerated Chamber

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Agricultural Sciences 2018年第9期9卷 1107-1114页

作者： Yeriko Belkys Obregón-Burgueno Teresa de Jesús Velázquez-Alcaraz Leopoldo Partida-Ruvalcaba Alejandro Manelik Garcia-Lopez Felipe Ayala-Tafoya Tomás Díaz-Valdés Glenn C.Wright Faculty of Agronomy of the Autonomous University of Sinaloa Culiacán México Institute of Agricultural Sciences of the Autonomous University of Baja California Mexicali México University of Arizona-Yuma Agriculture Center Yuma AZ USA

The aim of this research was to knowing if it would improve the shelf life of the lemons that were stored in hermetically polystyrene containers closed, as same that were placed in a refrigerated chamber with temperature of 10°C inside, high relative humidity (85%) and renovation of the air by action of the compressor of the chamber. Lemons cv “Lisboa” were cut directly from the orchard and washed with chlorinated water at 150 mg⋅L−1 sodium hypochlorite. The study variables were the color of the epicarp (shell) and the endocarp (pulp), polar and equatorial diameter, firmness of the pulp and total soluble solids concentration (°Brix) in the endocarp. The tone and purity of the yellow color of the shell (epicarp) and pulp or endocarp of the oranges increased significantly within polystyrene containers and, consequently, its quality was preserved and its shelf life was extended to more than 100 days without that they have symptoms of deterioration, by losses polar and equatorial diameter or decrease in total soluble solids. Inside closed containers polystyrene the temperature decreased to 2.0°C in the refrigerated chamber, so that the principle of thermal insulation polystyrene reaffirmed, and its functionality for packaging products, such as fruits, resolve some of their physiological problems themselves, to prolong its shelf life and improve its presentation.

关键词： Variety“Lisboa” Polystyrene Containers Weight Shape Color Firmness total soluble solids

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