Effects of cushioning materials on the firmness of Huanghua pears (<i>Pyrus pyrifolia Nakai</i> cv. Huanghua) during distribution and storage

Zhou, Ran; Su, Shuqiang; Li, Yunfei

doi:10.1002/pts.769

Cited by 22 publications

(11 citation statements)

References 25 publications

(27 reference statements)

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“…Frequently measured physiological changes were the effect on respiration rate, fruit weight, fruit firmness, ethylene production, cell wall permeability, enzyme activity, total soluble solids (TSS), and titratable acidity (TA). 11,50,51,57 Most of these physiological changes in fruits have been primarily caused by mechanical damage due to the experienced vibration. External damage caused by vibration stresses has been assessed visually as a percentage, 8,15,37,52 length and width of damage, 16 bruise diameter and equivalent bruise index, 10,14 bruise depth, 39 percentage decay of the modulus elasticity (PDME), 68 bruise area, bruise volume and package damage, 22 abrasion rating, 14 or a bruise score 8,33 as summarized in Table 1.…”

Section: Experimental Approachesmentioning

confidence: 99%

Measurement and evaluation of the effect of vibration on fruits in transit—Review

et al. 2018

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Mechanical vibration is a prominent cause of produce damage in many postharvest fruit supply chains. Knowledge on the causes, occurrence, and mechanistic relationship of vibration to produce damage is important for systematic development of remedial actions. This review identifies and discusses the critical factors of vibration, their implications for fruit quality, and possible improvements to addressing the issue of fruit quality deterioration. Frequently reported mechanical damage types caused by vibration on fruits are scuffing, fruit rub, and skin bruising. A wide range of factors can significantly affect the vibration intensity and thus resultant mechanical damage. Critical frequencies of vibration in the range of 0 to 10 Hz, attributed to peak energy levels in the power spectrum, cause substantial damage in fruits. Greater vertical acceleration and transmission of vibration to the higher tiers in a stacked column of packages result in increased mechanical damage. Fruit packages stacked in the rear positions of trucks are also affected more by vibration. Produce transported in leaf spring trucks has a higher risk of damage when compared with air-ride suspension trucks. Additionally increased road roughness, vehicle speed, and duration of exposure to vibration proliferate fruit damage. The effects of different inner packing methods and different package types on mechanical damage are less frequently investigated. More accurate characterization of mechanical damage caused by vibration and shocks and its reproduction by enhanced simulation methods will contribute to optimizing damage prevention mechanisms and further improving the quality of fruits in transit within the postharvest supply chain.

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Section: Experimental Approachesmentioning

confidence: 99%

Measurement and evaluation of the effect of vibration on fruits in transit—Review

et al. 2018

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“…The losses during transport and distribution rose to 17% in fruits and 10% in vegetables in 2004. 1 The last decades have thus seen increasing attention paid to truck transport features and the development of appropriate cushioning packaging that minimizes product damage, especially among perishable fruits and vegetables such as pears, [2][3][4][5][6] Both vibration and shock are involved in damaging goods during transport. Vibration levels in shipping had been studied in North America, [13][14][15][16][17] Japan, 18 China, 19 India, 20 Brazil, 21 Spain 22 and Thailand.…”

Section: Introductionmentioning

confidence: 99%

Analysis of shock and vibration in truck transport in Japan

et al. 2008

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To propose potential lab-simulated vibration tests for developing appropriate cushioning packaging, we recorded vibration acceleration during truck transport, including large sporadic shocks in regular smaller vibration so that acceleration did not cover a normal probability distribution and could not be considered as random vibration. We extracted all shock acceleration from vibration during local road and highway transport and studied the causes. We found that shocks were caused by road roughness, metal joints, difference in levels on the asphalt-surfaced road, pedestrian crossings, manholes, road curves, left and right turns, railroad crossings, etc. After removing shock events from all vibration acceleration during transport, we reconstructed remaining acceleration as continuous vibration. Vibration acceleration followed the normal probability distribution and could be considered random.

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“…Considering the importance of such losses and the need for better packaging design tools, many other investigations for agricultural products based on mechanical damages were performed in the last years, some of them focused on the product performance (BERARDINELLI et al, 2005;FERREIRA et al, 2006;GOMES, 2006;ZHOU et al, 2007;FERRAZ & LACERDA, 2007;SANCHES et al, 2008;VALENTINI et al, 2009) and others focused on packaging design (CHONHENCHOB et al, 2008;JARIMOPAS et al, 2008;THOMPSON et al, 2008;ZHOU et al, 2008). They somewhat used conventional approaches either to investigate the response of the vegetable tissue solely or the produce-package system by evaluating changes in physical-chemical properties after a mechanical stress.…”

Section: Introductionmentioning

confidence: 99%

Polyphenoloxidase activity in peaches after vibration

Dantas¹,

Ferraz

Honório

et al. 2013

Eng. Agríc.

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ABSTRACT:The vibration during transportation is one of the main causes of fruit damage. The actual methodologies used for damage evaluation in fruits seem to be subjective, since most of them are based on visual evaluation. In this study the effect of vibration, for one and two hours, on polyphenoloxidase (PPO) activity in peach pulp was investigated. The relation among PPO activity variation, postharvest time and resting time were also considered. Results showed that vibration affects PPO activity. However, it was not possible to correlate PPO activity variation and vibration.KEYWORDS: polyphenoloxidase, vibration, damage, peach. ATIVIDADE DE POLIFENOLOXIDASE EM PÊSSEGOS APÓS VIBRAÇÃO RESUMO:A vibração durante o transporte é uma das principais causas de dano em frutas. As metodologias atuais utilizadas na avaliação de danos em frutas parecem ser subjetivas, visto que a maioria delas é baseada em avaliações visuais. Neste trabalho, investigou-se o efeito da vibração em dois níveis, uma e duas horas, sobre a atividade de polifenoloxidase (PPO) em pêssegos. A relação entre a variação da atividade de PPO, tempo pós-colheita e tempo de repouso também foi considerada. Os resultados mostraram que a vibração afeta a atividade de PPO. Entretanto, não foi possível correlacionar a variação da atividade de PPO e a vibração. PALAVRAS-CHAVE:polifenoloxidase, vibração, dano, pêssego.

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Effects of cushioning materials on the firmness of Huanghua pears (Pyrus pyrifolia Nakai cv. Huanghua) during distribution and storage

Cited by 22 publications

References 25 publications

Measurement and evaluation of the effect of vibration on fruits in transit—Review

Measurement and evaluation of the effect of vibration on fruits in transit—Review

Analysis of shock and vibration in truck transport in Japan

Polyphenoloxidase activity in peaches after vibration

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