Progress in Agricultural Engineering Sciences最新文献_第7页

Linear tuning of microwaves power for the extraction of bioactive molecules from citrus peels 微波功率线性调谐提取柑橘果皮中生物活性分子

Progress in Agricultural Engineering Sciences Pub Date : 2020-11-26 DOI: 10.1556/446.2020.20011

G. D’Auria, G. D'amore, Aldo Romano, F. Marra

{"title":"Linear tuning of microwaves power for the extraction of bioactive molecules from citrus peels","authors":"G. D’Auria, G. D'amore, Aldo Romano, F. Marra","doi":"10.1556/446.2020.20011","DOIUrl":"https://doi.org/10.1556/446.2020.20011","url":null,"abstract":"In the last years, an alternative and convenient way to composting and/or bio-gasifying food waste is represented by the extraction of high value bioactive components from such materials. In particular, essential oils contained in matrices such as orange or lemon peels may represent high value bioactive components for the nutraceutical and pharma industry. In recent years, microwave assisted processes have been considered for use in solvent-free extraction. However, the microwave assisted extraction is often performed in very simple microwave systems, without an accurate control, if any, of the power release.In this work, the linear tuning of microwave power for the extraction of bioactive components from citrus peels is discussed, with emphasis on the consequent process yield and extract characteristics. Chemical analysis of the extracted mixture showed the presence of quite a number of active molecules of relevant interest for pharmaceutical and nutraceutical industries, such as glycoside flavanone (Hesperidin and Eriocitrin) in lemon peels, and polymethoxylated flavones (Nobiletin and Sinensetin) in orange peels.","PeriodicalId":20837,"journal":{"name":"Progress in Agricultural Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42800273","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

Analysis of chitosan treatment on white and black sweet cherry 壳聚糖处理白、黑甜樱桃的效果分析

Progress in Agricultural Engineering Sciences Pub Date : 2020-11-20 DOI: 10.1556/446.2020.20008

G. Zsivanovits, D. Iserliyska, M. Momchilova, Petya Sabeva, Z. Rankova

{"title":"Analysis of chitosan treatment on white and black sweet cherry","authors":"G. Zsivanovits, D. Iserliyska, M. Momchilova, Petya Sabeva, Z. Rankova","doi":"10.1556/446.2020.20008","DOIUrl":"https://doi.org/10.1556/446.2020.20008","url":null,"abstract":"Bicolor (Rosaline) and black (Regina) sweet cherry cultivars were treated with chitosan-Ca-lactate and chitosan-alginate solutions. The chitosan coating is biocompatible, nontoxic and possesses antimicrobial activity. The sample series (five replicates of thirty pieces from each variety and each treatment, and a control) were refrigerated at 4 °C for 21 and 28 d, to the end of shelf-life. Physical (visual sorting, weight loss and texture of intact fruit), physicochemical (TSS, antioxidant activity, and pH of the pulp), and microbiological properties (total number of microorganisms, Escherichia coli, fungi and yeasts) were investigated weekly. For the last week only the Regina cultivar had acceptable appearance, the other cultivar was discarded after 21 d. The chitosan-alginate treatment preserved the texture, showed smaller weight loss, higher antioxidant preservation and smaller microbial contamination than the samples with chitosan-Ca-lactate on both cultivars. Based on the results, the edible coating can help to preserve the nutritional value of fresh fruit and this technology can be useful in preparing the ready-to-eat fruit salads or in decoration of confectionery products.","PeriodicalId":20837,"journal":{"name":"Progress in Agricultural Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41996126","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: 1

Effect of grafting on the quality and apperance of eggplant fruit 嫁接对茄子果实品质和外观的影响

Progress in Agricultural Engineering Sciences Pub Date : 2020-11-20 DOI: 10.1556/446.2020.20017

Maryam Mozafarian, N. Kappel

引用次数: 3

Effect of refrigerated storage on the technological characteristics of meat stick made of insect and pork • 冷藏对昆虫猪肉肉棒工艺特性的影响

Progress in Agricultural Engineering Sciences Pub Date : 2020-11-20 DOI: 10.1556/446.2020.20014

R. Pintér, Evelin Molnar, K. N. Hussein, A. Tóth, L. Friedrich, K. Pásztor-Huszár

引用次数: 1

Effect of the temperature on the rheological properties of compound coating 温度对复合涂层流变性能的影响

Progress in Agricultural Engineering Sciences Pub Date : 2020-11-19 DOI: 10.1556/446.2020.20015

T. Kaszab, Lídia Bornemisza, K. Badak-Kerti

引用次数: 2

Performance comparison of microwave cavities used for extraction operations 用于提取操作的微波腔的性能比较

Progress in Agricultural Engineering Sciences Pub Date : 2020-11-18 DOI: 10.1556/446.2020.20010

G. D'amore, G. D’Auria, Aldo Romano, F. Marra

{"title":"Performance comparison of microwave cavities used for extraction operations","authors":"G. D'amore, G. D’Auria, Aldo Romano, F. Marra","doi":"10.1556/446.2020.20010","DOIUrl":"https://doi.org/10.1556/446.2020.20010","url":null,"abstract":"In the agri-food industry world, billions of tons of waste are produced every year. This represents both a direct loss (due to the failure to exploit their potential value, and their nutritional and energy content) and indirect loss, due to their necessary treatment and/or disposal. Some substances contained in the wastes, of potential high value, can be recovered by means of extraction. Conventional extraction processes involve the use of solvents, which end up requiring an additional process of separation from the solute identified as the desired product. In recent years, extraction techniques have been proposed without the use of solvents. This work compares the performance of two microwave cavities used for extraction operations, both working at 2.45 GHz.A calorimetric analysis performed by following the heating rate and temperature evolution in rack of 25 beakers filled with 25 mL of water, coupled with the solution of the heat transfer balance in the system, allowed to build the spatial distribution of the electromagnetic power dissipated as heat in each of the beakers. Fluid-dynamics aspects related to the recovery of the vapour phase produced during the extraction were also analyzed, with particular emphasis on the mean residence time of the vapour fraction in the extraction chamber as a function of its configuration.","PeriodicalId":20837,"journal":{"name":"Progress in Agricultural Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43093584","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

Nondestructive detection of low temperature induced stress on postharvest quality of kápia type sweet pepper 低温胁迫对kápia型甜椒采后品质的无损检测

Progress in Agricultural Engineering Sciences Pub Date : 2020-11-18 DOI: 10.1556/446.2020.20019

T. Zsom, V. Zsom-Muha, Lien Phuong Le Nguyen, D. Nagy, G. Hitka, Petra Polgári, L. Baranyai

{"title":"Nondestructive detection of low temperature induced stress on postharvest quality of kápia type sweet pepper","authors":"T. Zsom, V. Zsom-Muha, Lien Phuong Le Nguyen, D. Nagy, G. Hitka, Petra Polgári, L. Baranyai","doi":"10.1556/446.2020.20019","DOIUrl":"https://doi.org/10.1556/446.2020.20019","url":null,"abstract":"Application of cold storage temperatures below optimum induces a high risk and threat of chilling injury (CI) in the case of sensitive commodities. Sweet pepper belongs to this group of vegetables, so our main objective was to investigate and monitor the effect of non-optimal temperatures (2.5 and 5 °C) induced stress (chilling injury) on kápia type sweet pepper (Capsicum annuum L.) during its postharvest storage by nondestructive quality measuring methods. Fresh, semi-matured (reddish-green colored) samples of ‘Kapitány F1’ cultivar were stored at 2.5, 5 and 10 °C for 7 d followed by 7 d shelf-life. Nondestructive texture measurements were carried out by a purpose built tabletop acoustic stiffness device. Surface color and chlorophyll content related quality indices were evaluated by a chroma meter, a DA-meter® and a chlorophyll fluorescence imaging system. High resolution digital pictures were captured and analyzed for possible CI defects by means of surface color values (normalized RGB, hue and saturation). According to our results, the evaluated quality indices (DA-index®, acoustic stiffness coefficient, surface color parameters; F0, Fm, Fv and Fv/Fm chlorophyll fluorescence parameters) clearly represented the temperature dependent quality changes during low temperature storage, subsequently followed by ambient shelf-life. Samples stored under and at 5 °C showed the chilling temperature stressed symptoms of delayed and partly retarded postharvest ripening, even under simulated shelf-life conditions, but without the onset and manifestation of the characteristic visible symptoms of chilling injury. This may raise doubts and suggest possible future research areas regarding the role of non-optimal cold storage temperatures induced stress, the effect of chilling injury contributing factors and consequences.","PeriodicalId":20837,"journal":{"name":"Progress in Agricultural Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46407931","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: 7

Postharvest quality of hydroponic strawberry coated with chitosan-calcium gluconate 壳聚糖-葡萄糖酸钙包膜水培草莓采后品质研究

Progress in Agricultural Engineering Sciences Pub Date : 2020-11-18 DOI: 10.1556/446.2020.20016

M. S. Dam, X. T. To, Q. T. Le, L. Nguyen, L. Friedrich, G. Hitka, T. Zsom, T. Nguyen, Chuong Q. Huynh, My Diem Thi Tran, V. D. Nguyen

{"title":"Postharvest quality of hydroponic strawberry coated with chitosan-calcium gluconate","authors":"M. S. Dam, X. T. To, Q. T. Le, L. Nguyen, L. Friedrich, G. Hitka, T. Zsom, T. Nguyen, Chuong Q. Huynh, My Diem Thi Tran, V. D. Nguyen","doi":"10.1556/446.2020.20016","DOIUrl":"https://doi.org/10.1556/446.2020.20016","url":null,"abstract":"The aim of this study was to evaluate the effect of edible coating on hydroponic strawberry during storage. Strawberries were coated with either 1% or 1.5% chitosan (CS) or with solution containing 1.5% chitosan and 0.5% calcium gluconate (CaGlu). After treatment, samples were stored at 10 °C, RH 90% for 10 days. The weight loss, soluble solid content, firmness, surface color, pH, and percentage of decay were evaluated each day during the experiment. It was observed that coating extended the postharvest life of hydroponic strawberry compared to control. Fungal growth occurred on control group at the 5th day and fruit treated with 1% CS at the 8th day of the storage period, whereas no visible sign was detected for other treatments. Soluble solid content and pH showed only minor change for all samples. Weight loss of coated fruit was below 6% after 10 days of storage, whereas the weight loss of control samples was around 10% at the end of measurement. Moreover, coating could maintain the firmness of strawberry compared to the control. The combination of chitosan and calcium gluconate showed the potential for prolonging the storage period of hydroponic strawberry till 10 days without decay, whereas the control sample had more than 60% of rotted fruit.","PeriodicalId":20837,"journal":{"name":"Progress in Agricultural Engineering Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44407912","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: 5

Impact of heat treatment and flavorings on the antioxidant capacity of black and green tea 热处理和调味剂对红茶和绿茶抗氧化能力的影响

Progress in Agricultural Engineering Sciences Pub Date : 2020-11-18 DOI: 10.1556/446.2020.20007

Z. Bodor, Bianka Pergel, Csilla Benedek

引用次数: 2

Staling of sponge cakes with added emulsifiers 添加乳化剂的海绵蛋糕老化

Progress in Agricultural Engineering Sciences Pub Date : 2020-11-18 DOI: 10.1556/446.2020.20012

M. Marudova, S. Stankov, M. Baeva

引用次数: 2