
Daniel Neuwald- Dr. Agr
- Researcher at Lake of Constance Research Centre for Fruit Cultivation "Kompetenzzentrum Obstbau Bodensse" - KOB
Daniel Neuwald
- Dr. Agr
- Researcher at Lake of Constance Research Centre for Fruit Cultivation "Kompetenzzentrum Obstbau Bodensse" - KOB
About
246
Publications
48,815
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Introduction
Current institution
Lake of Constance Research Centre for Fruit Cultivation "Kompetenzzentrum Obstbau Bodensse" - KOB
Current position
- Researcher
Additional affiliations
August 2006 - December 2015
Kompetenzzentrum Obstbau Bodensse
Position
- Researcher at postharvest physiology and technology
March 2004 - March 2008
March 2002 - February 2004
Publications
Publications (246)
Refrigerated storage is crucial for maintaining the quality and safety of highly perishable and seasonal fresh fruit during the postharvest stage. Heat transfer is the primary factor that affects food decay in the storage period. However, cold storage facilities often face challenges with non uniform airflow and temperature distribution. Therefore,...
CH201/FRED® is a novel red-blush pear cultivar with long-term storage potential and a prolonged shelf life. However, it is prone to controlled atmosphere (CA)-related disorders, particularly cavities. This study explored the impact of the balance between vegetative growth and crop load on the development of CA-related disorders during storage. Trea...
This study aims to link changes in fruit firmness of slow-softening ‘Pinova’ and rapidly softening ‘Elstar’ apples with alterations in their pectin structure, respectively the activity of cell wall degrading enzymes, and the expression of a set of related genes. Measurements were obtained at harvest and following regular air (RA) or ultra low oxyge...
The aim of this work was to evaluate the effect of CA and DCA on sugars, tricarboxylic acid cycle (TCA), anaerobic metabolism and some volatile compounds of ‘Elstar’ and ‘Nicoter’ apples. This study also aimed to evaluate the effect of ethylene action blocking by 1-MCP (0.650 ppm). The storage conditions tested for both cultivars were (1) CA; (2) D...
The authors regret to inform that in Figs. 1B & 1C, the Y-axis captions display ‘mg/100mg FW’; however, the correct unit should be ‘mg/100g FW’. The values in the figure are correct, and the mistake does not affect the scientific conclusions of the article in any way.
The authors would like to apologise for any inconvenience caused.
This study investigates the fungal communities on the epidermis of apples obtained from German food retailers using a cost-effective and user-friendly meth-od, which is based on cultivating fungal colonies on Sabouraud dextrose agar, fol-lowed by a combination of microscopy and DNA extraction with PCR targeted on in-ternal transcribed spacers. The...
The preservation of apples in cold storage relies deeply on understanding the thermal dynamics governing their environment. Within packaging, apples engage in complex thermal interactions, between themselves and the environment, affecting convective and conductive heat transfer pathways. Challenges escalate in industrial cold storage facilities, ma...
CH201' is a new bicolor pear cultivar issued from the breeding program of Agroscope, (Switzerland) and in expansion in several European countries. It has shown promising storage potential and marketability. Nevertheless, the cultivar has also been found to be susceptible to cavity formation under some CA storage conditions or with 1-MCP treatment....
'Santana' ('Elstar' x 'Priscilla') ist schon längst keine Neuheit mehr im sich ständig drehenden Apfelsortenkarussell. In den 00er-Jahren wurde die Sorte insbesondere in der Öko-Produktion aufgrund der Schorfresistenz (Rvi6) stark forciert und große Flächen in Süddeutschland angelegt. Mittlerweile zeigen zwar jüngste Studien, dass in sehr nassen So...
'Santana' ('Elstar' x 'Priscilla') ist schon längst keine Neuheit mehr im sich ständig drehenden Apfelsortenkarussell. In den 00er-Jahren wurde die Sorte insbesondere in der Öko-Produktion aufgrund der Schorfresistenz (Rvi6) stark forciert und große Flächen in Süddeutschland angelegt. Mittlerweile zeigen zwar jüngste Studien, dass in sehr nassen So...
Nicht erst seit dem Ukrainekrieg setzen steigende Kosten aufgrund unsicherer Energiepreise und hoher Lohnkosten Betriebe unter wirtschaftlichen Druck. Doch während der Produktionsaufwand kostenintensiver wird, blieben die Erzeugererlöse weitgehend unverändert. Umso wichtiger ist es, dass Produktion und Lagerung e zienter werden, um auch künftig noc...
The application of the ethylene action inhibitor 1-methylcyclopropene (1-MCP) isan established strategy in the storage of pear fruit, to slow down ripening and improvemaintenance of quality-defining parameters. However, its usage is associated withcertain challenges, as the efficacy of 1-MCP can vary between pear cultivars and itsapplication can af...
With the increasing global demand for renewable energy, the challenge is identifying sustainable solutions´ avoiding land use conflicts. This study explores the potential of agrophotovoltaic (APV) systems, integrating photovoltaics with fruit production to simultaneously address energy generation and food production challenges. Focusing on the frui...
This study aimed to evaluate the effects of storage conditions on the development of superficial and senescent scald and its relationship with volatiles and antioxidant compounds in ‘Alexander Lucas’ pears (Pyrus communis) harvested at two maturity stages in three orchards. A two-factorial design combined two maturity stages with five storage condi...
The aim was to evaluate the effect of repeated low oxygen (RLO) stresses under DCA-RQ storage compared to ULO-CA-storage. ‘Elstar’ and ‘Nicoter’ apples were stored for 6 months at a fixed RQ of 1.3 and at 1°C and 3°C. The RLO stresses were induced twice a week by allowing the fruit to uptake the O2 inside the experimental chamber during 14 hours of...
Volatile compounds (VC) contribute to the overall flavour of apple, mainly from the chemical classes’ esters, alcohols, aldehydes, and acids. Among numerous volatile compounds, 1-hexanol, 1-pentanol, 1-butanol, hexanal, butyl acetate, and hexyl acetate are common to most apple cultivars and highly contribute to sensory perception. These compounds a...
The occurrence of anaerobic metabolism in apple fruit can be a result of advanced fruit senescence, the development of storage disorders, or may be induced by non-optimal storage conditions, especially in low oxygen settings. This study investigated the accumulation dynamics of anaerobic metabolites acetaldehyde, ethanol and ethyl acetate, in the a...
To preserve the quality traits of late-harvested ‘Galaxy’ apples during extended storage, the effects of 1-methylcyclopropene (1-MCP) treatment and storage conditions on postharvest quality were analysed. Alongside quality measures, indicators like ethylene production, respiration rate, aminocyclopropane-1-carboxylic acid oxidase (ACO) activity, an...
This study investigated the effects of pre-harvest calcium (Ca) application on apple fruit ascorbic acid (AsA) concentration and mineral contents in the cultivars ‘Braeburn’, ‘Fräulein’, ‘Pinova’, ‘Topaz’ and ‘Elstar’, and core browning (CB) susceptibility in ‘Braeburn’ and ‘Fräulein’ during controlled atmosphere (CA) storage (1 °C, 1 kPa O2 plus ≤...
This research investigates the impact of storage conditions on the quality and preservation of 'Shalimar' apples, a relatively new cultivar known for its resistance to apple scab and powdery mildew. The study explores the efficacy of different storage techniques such as regular atmosphere (RA), controlled atmosphere (CA), and dynamic controlled atm...
Storing apples for up to a year is a well-established practice aimed at providing a continuous, locally produced fruit supply to consumers and adapting to market trends for optimized profits. Temperature control is the cornerstone of postharvest conservation, and apples are typically kept at temperatures ranging from 0 to 3 °C. However, the energy-...
Modern pome fruit storage systems developed from cool storage in air to CA-storage and further to ULO-storage. Recently, DCA storage has developed and oxygen concentrations in storage have been lowered. “Low oxygen stress” in stored fruit can be determined non-destructively from either chlorophyll fluorescence (DCA-CF), the release of anaerobic pro...
The apple cultivar ‘Daiane’, a cross between ‘Gala’ and ‘Princesa’, is commercially cultivated in southern Brazil. Interactive effects of the storage atmosphere and inhibition of ethylene by 1-methylcyclopropen (1-MCP) on storability of ‘Daiane’ apples from two orchards were assessed in this study. For experiment one, fruit exposed or not exposed t...
Postharvest physiological disorders and parasitic storage diseases of apple fruit cause sizable economic losses and waste valuable resources. Therefore, there is a need to identify damage symptoms correctly and to understand disorder development in order to put in place better strategies to prevent fruit losses. For these reasons, a EUfunded INTERR...
Post-storage apple quality is affected by various factors, for instance, the stage of maturity at harvest, storage conditions, and post-harvest treatments. Storage conditions are crucial in deciding the fruit quality and flavor perceived by consumers. The variety 'Shalimar' (Topaz x Golden Delicious) is known to be resistant to scabs and mildew. To...
Climate change is responsible for major alterations in the phenology of fruit trees in Germany. Observations over the past 70 years at 3 study sites in Germany have shown the flowering of apple trees and subsequently, fruit development to set is continuously earlier, with serious implications for fruit quality as well as storability. Calcium (Ca) p...
Storing apples for up to a year is a well-established practice aimed at providing a continuous, locally-produced fruit supply to consumers and adapting to market trends for optimized profits. Temperature control is the cornerstone of postharvest conservation and apples are typically kept at temperatures from 0 to 3 °C. However, the energy-intensive...
The design of refrigeration systems in the commercial storage of fruit is usually based on a linear calculation of the cooling load. However, this entails that the systems are oversized for the subsequent storage period, resulting in unnecessarily high costs of investment, high energy consumption and an increased need for maintenance measures. In a...
A positive correlation of α-farnesene and its oxidation metabolites with superficial scald is commonly reported in apples stored in air or controlled atmosphere (CA) systems, where O2 levels are above the lower oxygen limit (LOL) tolerated by the fruit. Nevertheless, the LOL can be monitored by the dynamic controlled atmosphere (DCA) techniques and...
The allergen Mal d 1 is often responsible for adverse allergic reactions to fresh apples in northern and central Europe. The Mal d 1 content and isoallergen profile are proposed to have an impact on the allergenic potential of the fruit. Therefore, we investigated the impact of the cropping system on the Mal d 1 content and the isoallergen profile...
The definition of the minimum O2 levels required to maximally inhibit fruit aerobic respiration is essential to efficiently delay ripening and senescence during long-distance transportation. The aim of this study was to determine the minimum O2 levels required to maximally inhibit the aerobic respiration and prolong the post-harvest life of 'Tommy...
This study investigated the effects of controlled atmosphere (CA - 1.0 kPa O2 and < 0.7 kPa CO2), dynamic controlled atmosphere based on carbon dioxide production (DCA-CD), 1-methylcyclopropene (1-MCP), and raised storage temperatures (1 °C to 3 °C), on fruit metabolism and quality, disorder incidences and the volatile profile of ‘Santana’ apples a...
This study investigated factors influencing susceptibility and development of physiological disorders and decay expressed after long-term storage in ‘Gala’ apple fruit (Malus domestica Borkh.). Five experiments were performed over ten production years with fruit from two environmentally different orchard locations in a humid subtropical climate at...
Climate change is responsible for major alterations in the phenology of fruit trees. Observations over the past 70 years at 3 study sites in Germany have shown the flowering of apple trees and subsequently flower development to fruit set is continuously advanced, with serious implications for fruit quality as well as storability. Calcium (Ca) plays...
DCA-CD Plus is a novel dynamic storage technology that determines both the optimum oxygen partial pressures (pO2) and room temperatures for the storage of apples, based on monitoring the fruit CO2 production (CD). This study evaluated the effects of DCA-CD Plus on the physiological disorder incidences, fruit quality and the volatile profile of ‘Bra...
This study assessed the potential of a novel two-factor dynamic storage system DCA-CD Plus, which allows estimation of the oxygen partial pressures and room temperatures for optimum fruit conservation, based on monitoring fruit CO2 production. This was achieved for the apple cultivars “Jonagold,” “Pinova,” and “Red Prince” by a comparison with esta...
Gartenbau profi Monatsshrift für Obst, Gemüse und Zierpflanzen 4 /2023 Page 14-16
Bei der Lagerung von Beerenobst geht es mit der Ausnahmen von Roten und Schwarzen Johannisbeere, Heildelbeeren und Stachelbeeren um die Qualitäterhaltung nur weniger Tage. Der Grund für die begrenzte Haltbarkeit der Weichobstarten liegen einen in der Beschafftenheit...
Flesh browning and fungal decay are the two major causes of ‘Gala’ apple fruit loss after storage. Previous studies suggest increased storage temperatures for ‘Gala’ apple fruit diminish flesh browning and refrigeration energy consumption. However, the
effects of increased storage temperature on fungal decay are unclear particularly for apple fruit...
The relatively new apple cultivar ‘Shalimar’ (UEB 3374/2) is produced by crossing ‘Topaz’ with ‘Golden Delicious’. The cultivar is known for resistance to scab, tolerance to mildew, and well-balanced sugar and acid content. Therefore, ‘Shalimar’ apple has a potential of high commercial importance in future. During storage, the acidity reduces due t...
Water condensation on fruit surfaces after harvest is undesirable because it provides favorable conditions for microbial growth. In cold stores, condensation can occur due to unstable environmental conditions and repeated decrease of temperatures below the dew point at fruit surfaces. The influence of condensation on fruit quality maintenance durin...
A variety of biotic and abiotic factors can promote the development of physiological and pathogen related storage disorders in apple fruit. Nowadays, apples are stored in controlled atmosphere settings to delay senescence and consequently reduce quality loss post-harvest. This study was conducted to investigate the effect of various storage regimes...
Blue mold, caused by Penicillium expansum, is responsible for considerable economic losses during the storage and marketing of apples. The aim of the present study was to evaluate the effect of nitric oxide (NO) on the blue mold and ripening of ‘Cripps Pink’ apples. Fruit were placed in hermetically sealed glass jars and injected with 0, 5, 10, 50...
Storage decay is the primary cause of postharvest losses in integrated apple production worldwide. At harvest, fruit can appear free from infection but develop symptoms later during long-term storage, making treatment and prediction of fungal growth during storage challenging. Therefore, this study was conducted to determine the etiology of fungal...
Apples are stored at temperatures close to 0 °C and high relative humidity (up to 95%) under controlled atmosphere conditions. Under these conditions, the cyclic operation of the refrigeration machine and the associated temperature fluctuations can lead to localized undershoots of the dew point on fruit surfaces. The primary question for the presen...
The aim was to evaluate the isolated or combined effects of ethanol vapor (500 ppm) and ethylene treatments (150 ppm), on the ethylene production, respiration, sugars and organic acids dynamics of ‘Elstar’ and ‘Nicoter’ apples after harvest, during 14 d at 20 °C. Another aim was to identify at which step of fruit metabolism ethanol vapor acts. Frui...
This study evaluated the efficacy of preharvest 1-methylcyclopropene (1-MCP; Harvista™) applications to delay the on-tree fruit maturation of ‘Mishima’ apple (‘Fuji’mutant line) over two consecutive years and two orchards. Harvista treatments wereapplied at the beginning of the commercial harvest window at the early ripening stageat 75, 125, 175 an...
Bei der Lagerung von Beerenobst geht es mit der Ausnahme von roten und schwarzen Johannisbeeren, Heidelbeeren und Stachelbeeren um die Qualitätserhaltung für wenige Tage. Der Grund für die begrenzte Haltbarkeit der Weichobstarten liegt zum einen in der Beschaffenheit des Fruchtfleisches und der Fruchthaut. Im Vergleich zu Kernobst sind Beeren daher...
Mit dem Beginn des Jahres 2015 trat die EU-Verordnung Nr. 517/2014 in Kraft und konfrontierte Lagerhalter mit einer neuen Herausforderung: Verabschiedet wurde die Verordnung mit dem Ziel, durch ein Nachfüllverbot beziehungsweisen Phase-Down von fluorierten Kältemitteln, die Klimabelastung durch diese Treibhausgase zu verringern. Allerdings fallen n...
Das grundlegende Ziel der Lagerung ist, die Qualität der Früchte zum Zeitpunkt de Erntebestmöglich über die folgenden Monate zu erhalten. Äpfel mit geringer Festigkeit oder niedriger Zuckergehalten werden auch bei Einsatz modernen Lagerverfahrungkein akzeptables Niveau erreichen und infiziertes, krankes Fruchtmaterial kann nicht gesund gepflegt wer...
Nicht erst seit dem Krieg in der Ukraine setzen steigende Produktionskosten aufgrund unsicherer Energiepreise und hoher Lohnkosten landwirtschaftliche Betriebe wirtschaftlich zunehmend unter Druck. Im Vergleich zum Produktionsaufwand blieben die Marktpreise für die gelagerten Früchte weitestgehend unverändert. Da die Preise nicht in der Hand der ei...
Mit dem Beginn des Jahres 2015 trat die EU-Verordnung Nr. 517/2014 in Kraft und konfrontierte Lagerhalter mit einer neuen Herausforderung: Verabschiedet wurde die Verordnung mit dem Ziel, durch ein Nachfüllverbot beziehungsweisen Phase-Down von fluorierten Kältemitteln, die Klimabelastung durch diese Treibhausgase zu verringern. Allerdings fallen n...
Der Klimawandel ist für den Obstbau schon länger kein Schreckgespenst der Zukunft mehr. Mittlerweile sehen sich Produktionsbetriebe alljährlich mit extremen Wetterereignissen wie Spätfrost konfrontiert. Wir zeigen, welche Strate-gien wirklichen Schutz bieten können. Der Trend der letzten Jahrzehnte von zunehmend wärmeren Tem-peraturen im Frühjahr h...
This study was carried out to examine the response of ‘Luiza’ apple to different storage atmospheres, durations, and chemical inhibition of ethylene action by 1-MCP. Analysis of fruit quality and physiological disorder incidence were performed every two months during eight months of storage for Exp. 1 and 2, and after eight months for Exp. 3. Both...
Among other fruit crops, many apple (Malus × domestica Borkh.) cultivars are prone to alternate, or biennial bearing, which can be described as irregular cropping with high yields in “ON”-years and low or no crop load in the subsequent “OFF”-years. Such cropping behavior causes economic losses in commercial apple production and needs to be artifici...
The storage life of ‘Alexander Lucas’ pear is limited by the occurrence of internal storage disorders during controlled atmosphere (CA). 1-Methylcyclopropene (1-MCP) can be used to delay pear ripening, however, its interaction with CA conditions is not well understood. ‘Alexander Lucas’ fruit were treated with 1-MCP at 300 nL L⁻¹ for 24 h in air at...
The storage of fruit at minimum oxygen condition is crucial for optimal fruit quality maintenance. However, the optimal oxygen partial pressure of fruit varies according to several factors such as species, cultivar, harvest maturity, temperature, growing season and storage period. Based on these factors, storage technologies were developed that all...
Previous studies examining the causes of internal browning (IB) and strategies to reduce its incidence in ‘Braeburn’ apple grown in Southwest Germany have shown conflicting results. However, most studies have been conducted during only one season, requiring multi-seasonal evaluations to obtain robust data and information. IB has been associated wit...
Organic grown ‘Topaz’ apple has a high prevalence of Neofabraea spp. rot during storage. Previous research has shown that postharvest hot water (HW) dipping and calcium (Ca) treatments can effectively reduce fungal rot during the storage of apples. However, there is little information on the effectiveness of combining both treatments in reducing st...
Apples are very susceptible to infections from various fungal pathogens during the growing season due to prolonged exposure to environmental influences in the field. Therefore, a strict and targeted fungicide strategy is essential to protect fruit and trees. Increased environmental and health concerns and pathogen resistance have resulted in a risi...
In commercial apple storage, temperature and atmosphere are adjusted to inhibit ripening and respiration in order to maintain fruit quality. Apple cultivars show different sensitivities to reduced storage temperatures and extremely low oxygen concentrations. The purpose of this study was to describe the effect of controlled atmosphere (CA), 1-MCP t...
Water condensation on fruit surfaces after harvest is undesirable because it provides favorable conditions for microbial growth. In cold stores, condensation can occur due to unstable environmental conditions and repeated decrease of temperatures below the dew point at fruit surfaces. The influence of condensation on fruit quality maintenance durin...
The development of modern storage systems went from cold storage to CA-storage, to ULO-storage. Since a few years, DCA-storage has been examined in various fruit systems. The threshold for oxygen partial pressure was reduced when a new method is applied. Three different possibilities to control “oxygen stress” exist. Measurement of chlorophyll fluo...
This study describes the deterioration rates of ‘Imperial Gala’ and ‘Fuji Suprema’apples fruit along 30 days after controlled atmosphere storage (ACAS). It was simulatedhandling periods of 11 days at packinghouse (PH), 7 days at shipping and distributioncenter (S&DC) and 12 days at retail and consumer home (R&C). Apple fruit harvestedfrom six comme...
This study investigated the dynamic changes in the anaerobic metabolism end products (ethanol, acetaldehyde and ethyl acetate) of different apple cultivars during 84-days of regular air (RA) and controlled atmosphere (CA) storage after 0-, 3-, 7- and 14-days of anoxia. Increasing the length of exposure to anoxia increased the anaerobic metabolites...
Fruit and vegetables are stored for up to several months in large bin stacks in refrigerated rooms. Gaps between the bins and bin wall openings should allow the circulation of cooling air to remove field and respiration heat from produce. In an industrial apple store, the effects of the stacking array, fan position and number on airflow distributio...
Strawberry freshness declines quickly and thus rapid marketing strategies are required. Strawberries are non-climacteric fruit and must be harvested when fully ripe and ready for immediate consumption. At this physiological stage, the fruit is particularly susceptible to spoilage during postharvest handling and shelf-life. A rapid marketing strateg...
The aim of this study was to develop an improved strawberry postharvest handling regime to minimize postharvest losses during marketing. The experiment was conducted with the strawberry cultivars ‘Clery’, ‘Darselect’, ‘Elsanta’ and ‘Everest’ grown in the Lake Constance region of southwestern Germany. Half of the batch for each cultivar was harveste...
Since physiological disorders and parasitical storage diseases of fruit in the postharvest chain of apple fruit cause sizable economic losses and waste valuable resources, there is an important need to correctly identify symptoms and to understand disorder development in order to put in place better strategies to prevent these disorders from occurr...
Obstlagerung Nachdem über Monate der Zustand der einlagerten Früchte gewissenhaft überwacht und alles getan wurde, um die Qualität bestmöglich zu erhalten, gilt es nun, auch bei der Auslagerung und Vermarktung Fehler zu vermeiden, um kein Geld zu verschenken.
The present study aimed to evaluate the effect of two ethanol vapor doses (250 and 500 ppm), 1-methylcyclopropene (1-MCP) (0.650 ppm) with or without ethylene application (150 ppm) on the aerobic and anaerobic
metabolism and quality of ‘Elstar’, a fast ripening apple cultivar, and ‘Nicoter’, a slowly ripening apple cultivar,
over 14 d of holding at...
The aim of the present study was to evaluate the effect of maturity stages at harvest (MS) on the inhibitory effects of 1‐methylcyclopropene (1‐MCP) and the ultralow oxygen (ULO) on the ripening and synthesis of aroma volatiles of “Alexander Lucas” pears, and if this effect remains in different orchards. Results show that 1‐MCP inhibited ripening a...
Sweet cherries are susceptible to rain-cracking. The fruit skin is permeable to water, but also to solutes. The objectives of this study were to (1) establish whether a solute efflux occurs when a sweet cherry fruit is incubated in water; (2) identify the solutes involved; (3) identify the mechanism(s) of efflux; and (4) quantify any changes in sol...
Kurzfassung Bei der Kühllagerung von Obst ist Luftbewegung erforderlich, um die Feld-und Atmungswärme der Produkte abzuführen. Der Ventilatorbetrieb verursacht erheblichen Energieverbrauch. Durch optimierte Raumgestaltung und Ventilation sollte die Luftströmungsverteilung verbessert und den Produktanforderungen angepasst wer-den mit dem Ziel, den E...
In refrigerated stores of fruit and vegetables, cooling air is circulated by air coolers attached to the ceiling. Uniform airflow and even temperature distribution in the product stacks is important for quality maintenance. However, the air speed close to the produce inside the bins in industrial cold stores is unknown. Airflow distribution was mea...
The effect of a respiratory quotient dynamic controlled atmosphere (DCA – RQ), which induces ethanol production through low oxygen storage, and ethanol application on softening of Braeburn apples stored at different temperatures was investigated. DCA – RQ storage was associated with the activation of the alcohol dehydrogenase (ADH) and greater anae...
Watercore (WC) is a physiological disorder related to carbohydrate metabolism in apple fruit. Late season WC typically develops as ‘Fuji’ fruit mature on the tree. WC affected fruit develop water-soaked tissue around the vascular bundles and/or fruit core when the intercellular spaces are filled with fluid. While mild symptoms dissipate in storage,...
The aim of the study was to evaluate an elevated (3.0 °C) and low (1.0 °C) storage temperature combined with dynamic controlled atmosphere monitored by respiratory quotient (DCA–RQ) and chlorophyll fluorescence (DCA–CF) on anaerobic metabolism, physiological storage disorders and overall quality of ‘Nicoter’ (‘Kanzi®’) apples after 5.5 and 8.0 mont...
Anaerobic metabolism Sugar metabolism Membrane permeability A B S T R A C T Apple storage under extremely low oxygen concentrations, as in dynamic controlled atmosphere, changes both aerobic and anaerobic metabolism. In this work we evaluated the effects of controlled atmosphere (CA) and dynamic controlled atmosphere based on respiratory quotient (...
BACKGROUND
Processes extending the shelf life of climacteric fruit play an important role in terms of a sustainable global food supply. In a previous study, a synthetic octapeptide (NOP‐1) was shown to inhibit the interaction between ethylene receptor (ETR) and ethylene insensitive‐2 (EIN2), and in consequence delay tomato ripening. We investigated...
The objective of this investigation was to evaluate the quality parameters and aroma profiles of Conference and Alexander Lucas pears after 7 months of storage. Fruits of both cultivars were harvested at two different maturity stages and stored under cold (CS) (20.9 kPa O 2 + < 0.04 kPa CO 2), controlled atmosphere (CA) (2 kPa O 2 + < 0.7 kPa CO 2)...