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1.
A.J.A.A. Athayde P.D.L. de Oliveira I.C.D. Guerra M.L. da Conceição M.A.B. de Lima N.M.O Arcanjo 《The Journal of Horticultural Science and Biotechnology》2016,91(6):582-591
This study evaluated the efficacy of the combined application of chitosan (CHI) and Cymbopogon citratus (Dc. Ex Nees) (lemongrass) essential oil (CCEO) to control Rhizopus stolonifer in fresh tomato (Lycopersicon esculentum Mill.) fruit at room temperature (25°C) storage. The effects of the treatment (CHI and CCEO) on some quality characteristics of the fruit, namely weight loss, firmness, soluble solids, titratable acidity, pH, ascorbic acid, color, and sensory acceptability were also assessed. The minimum inhibitory concentrations of CHI and CCEO against R. stolonifer were 8 mg/mL and 5 µL/mL, respectively. Subinhibitory concentrations of CHI and CCEO (CHI 4 mg/mL, CCEO 1.25 µL/mL), alone and in combination, inhibited fungal spore germination and damaged spore membrane integrity. The CHI-CCEO coating decreased the severity of Rhizopus soft rot in tomato fruit; however, the coating more strongly delayed the infection when the fruit were artificially contaminated after coating application. The application of the coating preserved the general quality of tomato fruit as measured using a variety of physicochemical and sensory attributes. These results indicate that coatings composed of CHI and CCEO could represent promising postharvest treatments to inhibit Rhizopus soft rot in tomato fruit. 相似文献
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Influence of Melatonin Treatments on Fruit Quality and Storage Life of Sweet Cherry cv. ‘Sweetheart’
The study was carried out to determine the effect of melatonin on quality and postharvest life of sweet cherries (Prunus avium L.) cv. ‘Sweetheart’ during storage. The fruits were dipped at different concentrations of melatonin (0, 250, 500 and 1000?µmol l?1 for 10?min) and distilled water as control. The changes of sweet cherries were assessed at 7?day intervals by evaluating the following quality parameters: firmness, soluble solids content, titratable acidity, respiration rate, color values (L* and chroma), ascorbic acid content, total anthocyanin content, total phenolic content, and antioxidant activity. The results showed that increasing the dose to 1000?µmol l?1 melatonin had a remarkable effect on maintaining the quality of sweet cherry. 1000?µmol l?1 and 500?µmol l?1 melatonin treatments significantly inhibited the decrease in firmness, ascorbic acid, total phenols, total anthocyanin, antioxidant content and reduced color changes and respiration rate. However, the total soluble solids content and titratable acidity of the fruit were not influenced by melatonin applications. These findings indicate that melatonin treatment may be effective in maintaining quality and bioactive compounds of sweet cherry fruit.
相似文献4.
1-MCP对采后泗洪大枣生理生化的影响 总被引：1，自引：0，他引：1
以泗洪大枣为试材,研究了低温条件下(1±1℃)安喜布(1-MCP)处理(10kg果实/片安喜布,1-MCP有效质量浓度为0.9mg/L)对其生理生化的影响。结果表明,10kg/片安喜布处理可以抑制枣果呼吸速率,贮藏15d和45d呼吸速率分别为对照的53%和50%;可以延缓果实硬度下降,减少枣果维生素C的损失,从而保持枣果采后品质。贮藏60d维生素C保存率高达84.3%,是同期对照果的2倍;降低枣果细胞膜透性,延缓果实的衰老;抑制果实腐烂,对照果实贮藏30d即出现腐烂,而安喜布处理的枣果贮藏60d才开始出现腐烂;安喜布处理对延缓枣果转红效果不明显。 相似文献
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Calcium (Ca) has been considered a key element in maintaining fruit quality and extending the storage period of several fruits. The main blueberry (interspecific hybrids of Vaccinium corymbosum x V. darrowii) market for the Southern Hemisphere production involves a long transport between harvest and consumption. Foliar Ca sprays during the pre-harvest constitutes a common practice for improving Ca concentration [Ca] in fruits and therefore in alleviating the loss of firmness, dehydration and rot decay during postharvest. In this study, two formulations of Ca; Ca-nitrate [Ca(NO3)2] and chelate Ca-oxide (Ca-gluconate; Ca-Glu) were sprayed four times during pre-harvest of blueberry cv. O’Neal. [Ca] in the fruits was followed after each application and fruit quality parameters were determined at harvest and during 28 days of cold storage. Both formulations were ineffective in increasing [Ca] in the berries (or leaves) after any of the four applications. In fruits, [Ca] decreased from 0.32% at 25 days after full bloom (DAFB) to 0.11% Ca at harvest time. Other minerals such as magnesium (Mg), potassium (K), or nitrogen (N) remained unaffected by the treatments. Data shows that foliar pre-harvest applications of Ca, regardless of formula, were ineffective at increasing [Ca] or improving the quality of the fruit. 相似文献
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壳聚糖对晚红葡萄采后保鲜的影响 总被引：8，自引：1，他引：7
试验采用不同浓度的壳聚糖处理晚红葡萄.结果表明:在常温下贮藏至第10天时,用3%壳聚糖处理葡萄可以减少葡萄果梗的失水萎蔫,用3%的壳聚糖处理的晚红葡萄比对照的失水率降低62.14%.对其耐压力也有影响,用2%的壳聚糖处理的晚红葡萄比对照的耐压力高2.8倍,同时还抑制了PPO、POD酶的活性. 相似文献
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Recent trends towards greater fresh market use of ‘Bartlett’ pears has increased the need to extend its storage life to prolong the packing and marketing season in the United States Pacific Northwest region. Sixteen and 38%, respectively, of control fruit developed senescence disorders following 5 and 6 months of storage at ?1.1°C. Commercial standard controlled atmosphere (CA) conditions (O2 at 1.5 kPa and CO2 < 1 kPa) or edible coating (Semperfresh?, SF) prevent the appearance of senescence disorders for 5 months, but 9% and 16% of fruit, respectively, developed senescence disorders after 6 months. The combination of CA+SF completely inhibited senescence disorders for 6 months. Treatment with CA and SF, alone or in combination, maintained high-storage quality and developed ripening capacity with characteristic melting texture during storage. Senescence disorders were inhibited for 6 months by 0.3 µL l?1 1-methylcyclopropene (1-MCP), alone or combination with CA or CA+SF. In part these pears developed ripening capacity after 6 months of storage. The combination of CA+SF+1-MCP maintained the highest storage quality with dark green colour and hard firmness, which might be associated and proportional with reductions in ethylene synthesis and respiration rate after long-term storage. 相似文献
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Penta Pristijono Michael C. Bowyer Christopher J. Scarlett Quan V. Vuong Costas E. Stathopoulos John B. Golding 《The Journal of Horticultural Science and Biotechnology》2018,93(5):529-536
Green capsicums (Capsicum annum L.) were stored under low pressure (4 kPa) at 10°C for 5 and 11 days with 100% RH. The results showed that the incidence of stem decay under low-pressure storage for 5 and 11 days and storage at ambient atmosphere at 20°C for 3 days was lower compared to fruits that were stored at regular atmosphere at 10°C. Fruit that had been stored at low pressure at 10°C had no symptoms of flesh rots for up to 11 days, whilst fruit which had been stored at regular atmosphere at 10°C had 6% flesh rots after 11 days storage at 10°C.There was no difference in flesh firmness and colour retention between fruits stored at low pressure and regular pressure at 10°C. Capsicums stored at low pressure had higher overall acceptability compared to fruit that were stored at regular atmosphere at 10°C. These results demonstrate the potential of low pressure storage as an effective technique to manage capsicum fruit quality, however, there was no additional benefit when fruits were stored at low pressure for more than 5 days. 相似文献
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甜樱桃采后生理与贮藏保鲜 总被引：14，自引：0，他引：14
从甜樱桃果实采后生理特性、软化机理、采后病害及其防治、钙处理、气调贮藏、涂膜保鲜等六个方面综述了近年来国内外对甜樱桃采后生理与贮藏保鲜技术的研究状况。甜樱桃属于非跃变型果实,但乙烯对其采后衰老也有一定的影响。甜樱桃贮藏过程中存在的主要问题有可滴定酸和维生素C含量快速下降、果肉褐变、果实失水、软化、腐烂等,控制甜樱桃果实采后腐烂的方法主要包括物理防治、化学防治、生物防治和综合防治等,采用浸钙、涂膜、气调贮藏等技术手段和方法有利于保持甜樱桃果柄及果面颜色和果实硬度,减缓可溶性固形物、可滴定酸和维生素C含量下降,减少失水和腐烂,延长甜樱桃果实贮藏时间,提高贮藏品质。 相似文献
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In order to reduce the loss of quality of freshly harvested strawberries during storage, the effects of different packaging materials were examined with regard to storage time and temperature regime (20°C with relative humidity 75%, 4°C with relative humidity 88%). Strawberry containers (500?g) were used differing in form, alignment and number of ventilation openings, top and material. It was found that a drop in temperature to 4°C preserved the quality of strawberries longer in all packaging variants. Nevertheless, the used packaging material had different effects on the quality parameters. The packaging material made of polypropylene, which was closed with a lid and was equipped only with little ventilation openings, yielded the best results, e.?g. the transpiration losses were strongly reduced, thus favouring the preservation of pulp consistency and colour stability of the fruits. On the other hand, the fresh mass during storage was reduced by the materials polyethylenterephthalat, polyactid and groundwood. The quality loss was less dependent on the material, but more dependent on the number of ventilation openings. The results showed that with increasing numbers of ventilation openings the transpiration losses increased and the consistency and colour stability of the fruits decreased. In this context, a strong reduction of pathogenic infestation in relation to the ventilation openings could not be observed. As such, the loss of freshness was lowest with the packaging material of polypropylene, followed by the polyethylenterephthalat, polyactid and groundwood. Moreover, it was found that the kind of packaging material and the ventilation openings had an effect on the amount of pressure marks and the discharge of cell sap of the strawberries. The uneven ground surface of the materials made of polyethylenterephthalat and polyactid increased the punctual pressure on the strawberry fruits, which led to pressure marks and injuries of the fruit surface. Sharp-edged ventilation openings close to the ground surface of these variants favoured injuries and cell sap discharges of the packaging. 相似文献
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NSCC涂膜对黄花梨软化和细胞壁代谢的影响 总被引：6，自引：0，他引：6
为探讨NSCC涂膜对黄花梨保鲜效果,研究了20 ℃下1%的NSCC涂膜处理对黄花梨果实成熟及其细胞壁组分代谢的影响.结果表明,NSCC涂膜处理不但推迟了黄花梨果实呼吸高峰和乙烯高峰的出现时间,而且抑制了黄花梨果实PE、PG和纤维素酶活性的增加,延缓了纤维素和原果胶的降解,延缓水溶性果胶含量增加,保持了果肉硬度.1%的N... 相似文献
13.
Fruits of European plum (Prunus domestica L.) show high rates of transpiration. Consequently, they are highly perishable fruit. In the present study, the potential of an edible coating (Versasheen®-based with sorbitol as plasticizer) to improve storage life and keeping quality was evaluated on fruit of the plum cultivars ‘Jojo’ and ‘Tophit plus’. Plums were picked at commercial harvest date and stored at 2?±?0.5?°C (90?±?2% rh) for up to 28?d plus 2?d at 20?°C to simulate shelf life. Every seventh day, plums were analysed for transpiration, colour changes and laser light backscattering imaging (LLBI) at a wavelength of 785?nm to non-destructively investigate variations in quality properties of plums. Finally, fruit flesh firmness, soluble solids content, and titratable acidity were determined destructively. Results indicated that coating of fruit of both cultivars increased their surface resistance against water vapour transfer resulting in lower transpiration rates and thus lower mass losses compared to controls. Consequently, coating of fruit considerably delayed the decrease in flesh firmness. Moreover, edible coating retarded the increase of FWHM785 in coated plums. In this context, FWHM785 proved as a rapid and non-destructive tool to monitor changes in mechanical properties in heavily coloured plums. Results highlight that edible coatings successfully extend post-harvest life of plums. 相似文献
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Penta Pristijono Christopher J. Scarlett Michael C. Bowyer Quan V. Vuong Costas E. Stathopoulos Andrew J. Jessup 《The Journal of Horticultural Science and Biotechnology》2017,92(6):583-590
Freshly harvested vine-ripened tomatoes (Solanum lycopersicum cv. Neang Pich) were stored at low pressure (4 kPa) at 10°C for 11 days with 100% RH. Fruit quality was examined upon removal and after being transferred to normal atmosphere (101 kPa) at 20°C for 3 days. Weight loss was significantly lower in fruits which were stored at low pressure (4 kPa) than in fruits that were stored at regular atmosphere (101 kPa) at 10°C. Fruits that were stored at low pressure (4 kPa) reduced calyx browning by 12.5%, and calyx rots by 16%, compared to fruits that were stored at regular atmosphere (101 kPa) at 10°C. Fruit firmness was not significantly different between fruits stored at low pressures (4 kPa) and the normal atmosphere (101 kPa), with an average firmness of 14 N after fruits were stored at 10°C for 11 days. There was no difference in the SSC/TA ratio. The results suggest that a low pressure of 4 kPa at 10°C has potential as an alternative, non-chemical postharvest treatment to improve tomato quality during storage. 相似文献
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壳聚糖涂膜对葡萄常温贮藏效果的影响 总被引：1，自引：0，他引：1
以大泽山葡萄果实为试材,采用浓度0.5%、1.0%、2.0%、4.0%的壳聚糖溶液浸泡果实l min,在室温下贮藏12 d,研究了壳聚糖涂膜处理对葡萄果实贮藏品质的影响。结果表明:与对照相比,4种壳聚糖涂膜处理均可不同程度降低果实的失重率和腐烂率,抑制果实贮藏后期可溶性固形物含量下降,保持果实较好的硬度。同时抑制呼吸作用,提高果实中抗氧化酶活性,延缓了果实的成熟衰老。其中1.0%壳聚糖涂膜处理的果实贮藏12 d,其腐烂率和失重率分别为12.8%和3.34%,而对照的分别是27.3%和6.46%,与对照的差异显著,果实品质好,保鲜效果最佳。 相似文献
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气体成分对冬枣细胞膜和贮藏品质的影响 总被引：22，自引：2，他引：22
研究了气体成分对冬枣细胞膜和贮藏品质的影响。结果表明:在贮藏过程中,MDA含量和电导率呈上升趋势,CAT酶活性变化呈双峰曲线变化,O2和CO2浓度越低,越有利于保持CAT酶活性和抑制MDA含量及电导率的上升,有利于维持细胞膜的完整性;维生素C含量先积累后降低,硬度先迅速下降,然后变化不大,最后又迅速下降,脆果率呈下降趋势,O2和CO2浓度越低,维生素C保存率、脆果率和果肉硬度越高。试验结果还表明,3%O2+0%CO2气体条件对维持细胞膜完整性和提高贮藏品质效果最好。 相似文献
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热水喷淋处理结合拮抗酵母菌对樱桃果实采后腐烂及品质的影响 总被引：4，自引：2，他引：2
采用60℃20s热水喷淋处理(HWRB)、拮抗菌(罗伦隐球酵母)浸泡处理(108个细胞/mL的孢子悬浮液)及2者结合处理先锋樱桃果实,研究各处理对果实常温贮藏5d后的自然发病率、腐烂指数和感官品质及对接种扩展青霉或灰葡萄孢霉后果实伤口的发病率和病斑直径的影响。结果表明,HWRB处理能显著抑制果实的自然发病率及腐烂程度,拮抗菌的效果次之,而结合处理的抑制效果最好;各处理均未影响果实的品质。对接种扩展青霉的果实,结合处理能够有效减少伤口94%的腐烂和病斑直径的扩大,且效果好于HWRB及拮抗菌单独处理;对接种灰葡萄孢霉的果实,拮抗菌能够显著抑制伤口的发病率和病斑直径,而HWRB处理则能完全抑制伤口的发病,结合处理并未带来更好的效果。总之,HWRB处理结合拮抗菌能够成为一种理想的控制樱桃果实采后腐烂的处理方法。 相似文献
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Lucia L.M. Ntsoane Puffy Soundy John Jifon 《The Journal of Horticultural Science and Biotechnology》2016,91(5):520-528
This study illustrates the effects of light quality as influenced by photo-selective shade nets (red, yellow, and pearl with 40% shade) and the widely used commercial black net (25% shade) on overall retail quality and phytochemical contents of three lettuce (Lactuca sativa L.) varieties (two green varieties, Ashbrook and Aquarell, and a red variety, Exbury) at after postharvest storage. Variety-specific responses were observed with respect to different coloured shade nets with regards to the accumulation of β-carotene, ascorbic acid, flavonoids (kaempferol, isorhamnetin, quercetin, myricetin, anthocyanin), and antioxidant activity at harvest. Growing var. Ashbrook under the pearl net improved the ascorbic acid and myricetin contents after postharvest storage. Var. Exbury (red) produced under the black net showed higher retention of ascorbic acid, and anthocyanin contents after postharvest storage. Also pearl net production improved the β-carotene content after postharvest storage in var. Aquarell. All lettuce types produced under the pearl nets showed less weight loss, and overall acceptance after postharvest storage. Spectral quality under the shade nets enabled us to improve the phytochemical content and antioxidant properties in light-sensitive varieties Ashbrook Aquarell and Exbury, during winter season. 相似文献
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This experiment was conducted to study the effect of salicylic acid addition to nutrient solution and different postharvest treatments on fruit quality of strawberry cv. Camarosa after 7 days at 2 °C. Plants were irrigated with two complete nutrient solutions, with salicylic acid (0.03 mM) or without salicylic acid as the control. Fruits were then treated with eight different postharvest treatments (25 °C water, 45 °C water, 25 °C or 45 °C water containing CaCl2 (1%), 25 °C or 45 °C water containing salicylic acid (2 mM) and 25 °C or 45 °C water containing both CaCl2 (1%) and salicylic acid (2 mM)). Fruits which received SA in their nutrient solution had less weight loss and decay and higher firmness. All of the postharvest treatments improved fruit quality characteristics. Fruits dipped in salicylic acid solution had less weight loss, decay and a* (redness) and higher firmness and hue angle than control. Heat treated fruits had less decay and a* and higher hue angle than control. Fruits dipped in CaCl2 solution had less weight loss, decay and a* and higher firmness than control. Combination of the three postharvest treatments improved firmness, decay, weight loss and vitamin C. 相似文献
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1-MCP处理对不同采收成熟度‘徐香’猕猴桃保鲜效果的影响 总被引：2，自引：0，他引：2
以‘徐香’猕猴桃为试材,研究了4个采收期(盛花期后1301、381、46和154 d)1-MCP(1-甲基环丙烯)浓度为0.5μL/L处理24 h后,在(2±1)℃下贮藏后的保鲜效果。结果表明:1-MCP能够显著降低‘徐香’果实低温贮藏过程中呼吸速率、乙烯释放速率,延缓果实硬度、可滴定酸的下降以及可溶性固形物的上升;4个采收期的1-MCP处理果实出库后均能正常后熟,但品质和保鲜效果存在差异,其中Ⅱ、Ⅲ期处理果实在贮藏期结束时保持较高的硬度、可滴定酸和VC含量,并且110 d时失重和腐烂率较低;货架期末硬度、糖酸比相对较高,失重率和腐烂率较低。由此推断‘徐香’猕猴桃盛花期后138~146 d采收品质好,此时的1-MCP处理效果最佳。 相似文献