Fruit Processing Plant

Bárta, Jozef

doi:10.1002/9780470277737.ch14

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…), yeasts (Candida, Pischia, Saccharomyces, Zygosaccharomyces, Hanseniaspora and Debaryomyces), as well as bacteria (Bacillus spp.) (Barta, 2006). These microorganisms predominantly occur on the apple surface, but the frequency and share of colonisation can vary.…”

Section: Introductionmentioning

confidence: 99%

“…These microorganisms predominantly occur on the apple surface, but the frequency and share of colonisation can vary. Fresh apple skin with active substances, natural wax coating and its firmness act as a barrier and microbes are restrained to remain outside of fruit flesh as long as the skin is healthy and intact (Barta, 2006;Rodrigo et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…If apple are collected with soiled hands or after harvesting washed with water whose quality does not conform to hygiene requirements, the fruits can be contaminated with Enterobacter, Shigella, Salmonella spp., Vibrio cholerae, Cryptosporidium parvum, Giardia lamblia, Cyclospora caytanensis, Toxiplasma gondii, E. coli 0157:H7, etc., that can cause both fruit spoilage and human poisoning (Barta, 2006). Apples, which have fallen to the ground, can be contaminated with bacteria Listeria monocytogenes and Sarcina spp.…”

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confidence: 99%

“…Gram-positive bacteria are very sensitive to changes in water activity. If water activity is too low, for instance 0.75-0.61, halophilic bacteria, xerophilic microscopic fungi and osmophilic yeasts multiplication can occur (Barta, 2006).…”

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confidence: 99%

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Influence of 1-MCP treatment and storage conditions on the development of microorganisms on the surface of apples grown in Latvia

Juhnevica-Radenkova

Radenkovs

Segliņa

2016

Zemdirbyste-Agriculture

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The quality of fruits during storage depends on the storage environment and fruit microorganisms, since the activity of microorganisms can cause the decay of fruits. A correctly selected composition of gas mixture in a storage chamber extends shelf-life by reducing development of microorganisms, accordingly ensuring microbiological safety of fruits. The aim of the study was to evaluate the dynamics of microflora on the surface of apples within six months of cold storage that prior to storage had been treated with 1-methylcyclopropene (1-MCP), and those stored in ultra low oxygen (ULO) under different controlled atmosphere conditions. The highest microbial diversity and amount on the apple fruit surface was found when stored in cold storage. At the beginning of storage, 70% of the total surface microflora of fruits consisted of the following microscopic fungi: Penicillium spp., Alternaria spp., Botrytis spp., Aspergillus spp., Mucor genus and Cladosporium spp., bacteria from Bacillus genus, and yeasts like Candida curvata, C. fomata, Pichia etchellsii and P. carsonii. After three and six months of apple storage, partial microorganism inhibition was observed when comparing cold storage and cold storage + 1-MCP treatments, in turn, the most positive significant result was achieved when apples were stored under controlled atmosphere conditions. After six months of apple storage, the lowest amount of colony forming units (CFU) of bacteria, mould and yeast was estimated on the surface of apple fruits that had been stored using controlled atmosphere technique. Microorganisms, including Penicillium, Bacillus spp., Candida curvata, Pichia etchellsii and C. fomata were identified on the surface of ULO1 samples, while on ULO2 samples only Penicillium spp., Bacillus spp., C. curvata and C. fomata. After storage in controlled atmosphere, 90% of all microscopic fungi present on the surface of apples were yeasts.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Influence of 1-MCP treatment and storage conditions on the development of microorganisms on the surface of apples grown in Latvia

Juhnevica-Radenkova

Radenkovs

Segliņa

2016

Zemdirbyste-Agriculture

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Establishing a Consumer Quality Index for Fresh Plums (Prunus salicina Lindell)

Crisosto

2023

Horticulturae

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Plums are primarily marketed for fresh consumption, canning, freezing, jam and jelly. Unfortunately, plum consumption has remained steady or declined. Consumers complain about a lack of flavor quality but are willing to pay for higher quality. Thus, absence of flavor and cold storage disorders are the main barriers to consumption. Plum cultivars are sensitive to gel breakdown, flesh browning and ‘off flavors’. Consumer approval and postharvest life are controlled by genotype, quality attributes, harvest date and proper postharvest handling. A consumer quality index (CQI) based on soluble solids concentration (SSC) and minimum firmness is proposed to maximize flavor and postharvest life. In most cases, late harvest increases quality attributes. Our work and industry experience demonstrated that using critical bruising thresholds (CBT) based on minimum firmness measured at harvest acts as a reliable predictor of how late to harvest safely for maximum visual and sensory quality. Plums tolerated late harvest well because of their high tolerance to bruising damage, but suitable postharvest temperature management and selling within the potential postharvest life are required to maintain flavor and avoid the beginning of chilling injury. Thus, to maximize flavor and postharvest life, a CQI based on SSC and minimum firmness measured at consumption is proposed. This article provides guidance on using this CQI, combined with proper postharvest handling techniques, such as correct harvest date determination and temperature management, to maintain quality and increase consumption.

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Plant Tissue Modelling Using Power-Law Filters

Gadallah

Ghoneim

Elwakil

et al. 2022

Sensors

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Impedance spectroscopy has became an essential non-invasive tool for quality assessment measurements of the biochemical and biophysical changes in plant tissues. The electrical behaviour of biological tissues can be captured by fitting its bio-impedance data to a suitable circuit model. This paper investigates the use of power-law filters in circuit modelling of bio-impedance. The proposed models are fitted to experimental data obtained from eight different fruit types using a meta-heuristic optimization method (the Water Cycle Algorithm (WCA)). Impedance measurements are obtained using a Biologic SP150 electrochemical station, and the percentage error between the actual impedance and the fitted models’ impedance are reported. It is found that a circuit model consisting of a combination of two second-order power-law low-pass filters shows the least fitting error.

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Fruit Processing Plant

Cited by 4 publications

References 2 publications

Influence of 1-MCP treatment and storage conditions on the development of microorganisms on the surface of apples grown in Latvia

Influence of 1-MCP treatment and storage conditions on the development of microorganisms on the surface of apples grown in Latvia

Establishing a Consumer Quality Index for Fresh Plums (Prunus salicina Lindell)

Plant Tissue Modelling Using Power-Law Filters

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