甜樱桃采后生理及贮藏保鲜技术进展

从呼吸作用、乙烯作用、酶的变化和果肉营养成分变化等方面阐述了甜樱桃果实采后的生理特性,并从冷藏保鲜、气调保鲜、减压保鲜、辐照保鲜、热处理和化学保鲜等方面综述了甜樱桃贮藏保鲜技术,提出目前存在的问题与未来的对策。     

李子采后特性及贮藏保鲜技术研究进展

李子艳丽、美味,是我国重要的水果之一,李子采后经历呼吸及乙烯代谢、风味变淡、营养降低、膜脂过氧化、软化、冷害等品质生理变化过程,因其采后易腐烂变质,应对采后李子进行商品化处理。综述了低温贮藏、冷热处理、气调贮藏、减压贮藏、钙处理、1-MCP处理、涂膜保鲜等李果保鲜技术。今后应实现李果生产、运输、保鲜、贮藏、销售一体化,形成李果专用贮藏保鲜综合配套技术。     

保鲜剂对甜樱桃果实贮藏性的影响研究

以红灯等甜樱桃为试材,探讨自制的甜樱桃专用保鲜剂对甜樱桃贮藏保鲜的效果。试验结果表明,该保鲜剂处理在保持甜樱桃果实营养方面有良好的效果,能够有效地抑制果实的褐变,减少果实腐烂。     

不同PE保鲜膜对甜樱桃果实贮藏性的影响

以大连市金州区产的红灯、雷尼甜樱桃为试材，探讨了不同PE膜包装处理对甜樱桃贮藏性的影响。结果表明，包装处理在保持甜樱桃果实营养方面有良好的效果，贮藏110d后，采用0．04mm的PE（乙烯）膜果实的腐烂率为4,66％、褐变率为3．56％。同时保鲜荆＋PE保鲜膜处理可使相关酶的活性得到抑制。     

箱式气调对甜樱桃贮藏及货架品质的影响

为研究自发气调保鲜技术对甜樱桃贮藏效果的影响,以莎米托、菊红、拉宾斯、雷尼为试材,分析它们贮藏期及货架2 d后果实品质变化规律。试验结果表明,应用塑料箱式气调保鲜技术后,甜樱桃果实贮藏期延长,莎米托、菊红贮藏56 d,拉宾斯、雷尼贮藏49 d时,货架期果实品质仍呈缓慢下降趋势,尚具有商品及食用价值,之后果实硬度、可滴定酸度下降迅速,果柄保鲜指数、果皮褐变指数加重。     

猕猴桃采前处理保鲜技术研究进展

对近年来猕猴桃的采前处理保鲜技术的研究进展进行了综述。首先介绍了采前喷施钙、二氧化氯、草酸、水杨酸和萘乙酸处理以及采前套袋处理对采后猕猴桃贮藏保鲜的影响。然后根据猕猴桃产业发展和贮藏保鲜的现状提出猕猴桃贮藏保鲜技术的发展趋势,为相关人员提供技术依据。     

不同品种甜樱桃贮藏保鲜技术研究

本文研究不同品种甜樱桃贮藏保鲜技术，结果表明：不同品种甜樱桃耐藏性顺序为美早＞佳红＞红灯＞菊红。     

西兰花采后贮藏保鲜技术研究进展

西兰花（Brassica oleracea L.）在我国已有上千年的栽培历史,是一种具有较高经济价值的特色蔬菜,西兰花花球属于繁殖器官,采收时生理代谢旺盛,常温下,容易开花、失绿和失水,1～2 d丧失商品价值,近年来国内外学者对其贮藏保鲜技术进行深入的研究和实践,收到了较好的贮藏效果。本文介绍西兰花花球采后贮藏特性,重点阐述目前国内外有关西兰花花球采收贮藏保鲜技术研究进展,保鲜技术主要包括物理保鲜技术（低温贮藏、紫外线及光照处理、气调贮藏、热激处理和静电雾化等）和化学保鲜技术（1-甲基环丙烯处理、乙醇处理、涂膜处理、激素处理等）,并对未来西兰花保鲜技术的发展方向进行展望,以期为西兰花贮藏保鲜提供参考。     

3种气调方式对甜樱桃冷藏期贮藏品质和生理指标的影响

为探索适用于甜樱桃的最佳气调贮藏方式,以快速气调(FA)、二段仿生气调(SBA)、自发气调(MA)3种气调方式贮藏"砂蜜豆"甜樱桃,研究不同气调方式对甜樱桃冷藏期生理品质的影响。结果表明,冷藏期间FA、SBA、MA处理气调箱中CO2含量分别为4.78%~9.47%、0.00%~10.37%、0.00%~8.17%,O_2含量分别保持在11.43%~16.12%、10.53%~20.90%、12.73%~20.90%,而对照处理的CO_2含量始终低于1.33%,O_2含量始终高于19.57%。从保鲜效果来看,与对照相比,3种气调方式均不同程度地延缓了甜樱桃腐烂率、果梗褐变指数的上升,保持了果实的色泽和硬度,有效抑制了可滴定酸含量及Vc含量的下降速率,使果实保持较好的风味,并控制了呼吸强度和乙烯生成速率的升高,较好地保持了POD和PPO活性。3种气调方式中,快速气调(FA)处理最为有效地维持了甜樱桃的贮藏品质、延缓果实衰老,对"砂蜜豆"甜樱桃的贮藏保鲜效果最佳。     

果蔬贮藏保鲜产业现状、研究进展与科技支持

简要介绍了我国果蔬贮藏保鲜的现状,指出了当前果蔬贮藏的主要问题。论述了国内外有关果蔬贮藏保鲜的新技术及研究进展情况,包括:天然果蔬保鲜剂的研究、利用调压技术贮藏、臭氧及负氧离子保鲜、利用生物技术保鲜、静电场处理贮藏、低剂量辐射处理和紫外线处理保鲜以及细胞水结构化气调保鲜等国内外近几年发展起来的现代果蔬贮藏保鲜技术。并阐述了科技对我国果蔬贮藏保鲜产业的支撑作用。     

Sweet cherry: Composition,postharvest preservation,processing and trends for its future use

BackgroundSweet cherries (Prunus avium L.) are a nutritious fruit which are rich in polyphenols and have high antioxidant potential. Most sweet cherries are consumed fresh and a small proportion of the total sweet cherries production is value added to make processed food products. Sweet cherries are highly perishable fruit with a short harvest season, therefore extensive preservation and processing methods have been developed for the extension of their shelf-life and distribution of their products.Scope and approachIn this review, the main physicochemical properties of sweet cherries, as well as bioactive components and their determination methods are described. The study emphasises the recent progress of postharvest technology, such as controlled/modified atmosphere storage, edible coatings, irradiation, and biological control agents, to maintain sweet cherries for the fresh market. Valorisations of second-grade sweet cherries, as well as trends for the diversification of cherry products for future studies are also discussed.Key findings and conclusionsSweet cherry fruit have a short harvest period and marketing window. The major loss in quality after harvest include moisture loss, softening, decay and stem browning. Without compromising their eating quality, the extension in fruit quality and shelf-life for sweet cherries is feasible by means of combination of good handling practice and applications of appropriate postharvest technology. With the drive of health-food sector, the potential of using second class cherries including cherry stems as a source of bioactive compound extraction is high, as cherry fruit is well-known for being rich in health-promoting components.     

Anthocyanin and Polyphenolic Composition of Fresh and Processed Cherries

ABSTRACT: The distribution of anthocyanin pigments and polyphenolics in 1 sour cherry ( Prunus cerasus ) and 3 sweet cherry ( Prunus avium ) cultivars was determined by high-performance liquid chromatography with diode array detection. Changes during frozen storage, canning, and brining were also monitored. Sweet cherry cultivars differed qualitatively with respect to the minor anthocyanins. Hydroxycinnamates are the major class of polyphenolics in sweet cherries, whereas flavanols are in the majority in Montmorency cherries. Hydroxycinnamates were greatly affected by processing and storage, whereas flavonol glycosides were quite stable. Half of the anthocyanins and polyphenolics were transferred to the syrup with canning, and nearly all were transferred to brine during brining.     

甜樱桃采后病害、贮藏期间品质变化及其防腐保鲜技术

本文详述了甜樱桃在采后发生侵染性病害和生理性病害的原因、发病症状以及对果实产生危害的结果。并介绍了甜樱桃在不同温度贮藏期间感官品质及营养物质变化,针对樱桃自身特性和采后病害分析结果,对现有的适用于樱桃的保鲜技术进行分类总结。最后,总结了目前制约樱桃产业发展的主要问题,并对此提出对策。     

Sweet cherries from farm to table: A review

In order to enable long-distance transportation and ensure that the fruit presents the requisite quality on arrival at markets, the cherry industry for direct consumption needs to prolong post-harvest shelf life. Sweet cherries are highly perishable, non-climacteric fruits with shelf life of 7–14 days in cold storage. Their shelf life is shortened by loss of firmness, color and flavor, stem discoloration, desiccation and mould growth. Various factors such as harvest time, proper handling and cooling practices and above all packaging, greatly influence the shelf life of cherries. One of the areas of research that has shown promise, and had success, is modified atmosphere packaging (MAP). It is one of the fastest growing packaging technologies and has many advantages for different food products. Properly designed modified atmosphere packs can be exploited to lower respiration rates and thus ripening of fruits which results in least changes in physiochemical parameters of sweet cherries during postharvest storage. This paper intended to review a broad spectrum of studies dealt with the use of MAP for preservation of sweet cherries cultivars with an interest for future research work.     

Methods for quality evaluation of sweet cherry

Sweet cherry (Prunus avium L.) is a highly valued fruit, whose quality can be evaluated using several objective methodologies, such as calibre, colour, texture, soluble solids content (SSC), titratable acidity (TA), as well as maturity indexes. Functional and nutritional compounds are also frequently determined, in response to consumer demand. The aim of the present review is to clarify and establish quality evaluation parameters and methodologies for the whole cherry supply chain, in order to promote easy and faithful communication among all stakeholders. The use of near-infrared spectroscopy (NIRS) as a non-destructive and expeditious method for assessing some quality parameters is discussed. In this review, the results of a wide survey to assess the most common methodologies for cherry quality evaluation, carried out among cherry researchers and producers within the framework of the COST Action FA1104 ‘Sustainable production of high-quality cherries for the European market’, are also reported. The standardisation of quality evaluation parameters is expected to contribute to the preservation and shelf-life extension of sweet cherries, and the valorisation of the whole supply chain. For future studies on sweet cherry, we put forward a proposal regarding both sample size and the tests chosen to evaluate each parameter. © 2022 Society of Chemical Industry.     

Total Anthocyanins and Total Phenolics of Fresh and Processed Cherries and Their Antioxidant Properties

ABSTRACT: Total anthocyanins, total phenolics, and the antioxidant activities of 1 sour cherry cultivar ( Prunus cerasus L.) and 3 sweet cherry cultivars ( P. avium L.) were determined. Bing cherries were highest in anthocyanins, whereas Montmorency cherries were highest in total phenolics and antioxidant activities (oxygen radical absor-bance capacity and ferric reducing antioxidant power). Total phenolics and anthocyanins for all cultivars were concentrated in the skin. More than 75% of anthocyanins in frozen Bing cherries were destroyed after 6 mo of storage at -23°C. During canning, about half the anthocyanins and polyphenolics leached from the fruits into the syrup with little total loss. Spent cherry brine contained substantial anthocyanins and polyphenolics.     

CaCl2处理对采后甜樱桃果实生理代谢和品质的影响

以"砂蜜豆"品种甜樱桃为研究材料,经不同浓度的CaCl2(0,10,20g/L)浸泡15min后,在(0±1)℃下进行包装贮藏,每9d测试果实颜色、硬度、可溶性固形物及相关酶活性。结果表明,不同浓度CaCl2处理均可延缓果皮的着色进程,防止果实软化,保持原有风味,抑制果实的PPO、POD和LOX的活性,减少MDA的产生。适当浓度的CaCl2处理能延长甜樱桃的货架期,保持较好的口感与风味,有利于甜樱桃的贮藏保鲜。     

Factors affecting the quality of a novel fresh-cut sweet cherry product

The primary objective of this work was to evaluate whether sweet cherries could make an acceptable fresh-cut fruit product. The concept was to develop a cherry product cut such that the pit and associated tissue from stem bowl to the nose of the fruit were removed in a single cutting operation, leaving a cherry with a ‘hole’ which could be filled with various foodstuffs (much like a pitted olive). Secondary objectives were to determine if the design of the cutting tube, storage at low temperature before cutting or preharvest treatment with gibberellic acid (GA: used to improve firmness in commercial production) could influence the quality of packaged fresh-cut sweet cherries. Most cultivars of sweet cherries tested appeared to be suitable for cutting, and quality was not impacted significantly if GA was used on the fruit prior to harvest. Low temperature of the fruit at the time of cutting appeared to lead to greater deterioration than warm temperatures and so perhaps a warm-up time is required if the fruit are held in cold storage before cutting. Finally, the design of the cutting tube was of great importance with a scalloped-edge resulting in a lower cutting force, and hence less injury and better quality, than a straight-edge design.     

Cherries and health: a review

Cherries, and in particular sweet cherries, are a nutritionally dense food rich in anthocyanins, quercetin, hydroxycinnamates, potassium, fiber, vitamin C, carotenoids, and melatonin. UV concentration, degree of ripeness, postharvest storage conditions, and processing, each can significantly alter the amounts of nutrients and bioactive components. These constituent nutrients and bioactive food components support the potential preventive health benefits of cherry intake in relation to cancer, cardiovascular disease, diabetes, inflammatory diseases, and Alzheimer's disease. Mechanistically, cherries exhibit relatively high antioxidant activity, low glycemic response, COX 1 and 2 enzyme inhibition, and other anti-carcinogenic effects in vitro and in animal experiments. Well-designed cherry feeding studies are needed to further substantiate any health benefits in humans.     

酸性电解水对果蔬杀菌及保鲜效果的研究

本研究采用酸性电解水对新鲜菠菜、桃子及樱桃进行处理,考察了酸性电解水对上述果蔬在不同贮藏条件下保鲜效果的影响.结果表明,pH 3.04、有效氯浓度(ACC)30.2 mg/kg的强酸性电解水和pH 5.68、ACC 26.6 mg/kg的微酸性电解水浸泡处理5min均能使菠菜表面的微生物数下降2.0lg cfu/g以上...