In-Situ Measurement of Fresh Produce Respiration Using a Modular Sensor-Based System

dc.contributor.authorKeshri, Nandita
dc.contributor.authorTruppel, Ingo
dc.contributor.authorHerppich, Werner B.
dc.contributor.authorGeyer, Martin
dc.contributor.authorWeltzien, Cornelia
dc.contributor.authorMahajan, Pramod V.
dc.date.accessioned2020-11-19T08:36:59Z
dc.date.available2020-11-19T08:36:59Z
dc.date.issued2020-06-25
dc.date.updated2020-07-11T06:44:21Z
dc.description.abstractIn situ, continuous and real-time monitoring of respiration (R) and respiratory quotient (RQ) are crucial for identifying the optimal conditions for the long-term storage of fresh produce. This study reports the application of a gas sensor (RMS88) and a modular respirometer for in situ real-time monitoring of gas concentrations and respiration rates of strawberries during storage in a lab-scale controlled atmosphere chamber (190 L) and of Pinova apples in a commercial storage facility (170 t). The RMS88 consisted of wireless O2 (0% to 25%) and CO2 sensors (0% to 0.5% and 0% to 5%). The modular respirometer (3.3 L for strawberries and 7.4 L for apples) consisted of a leak-proof arrangement with a water-containing base plate and a glass jar on top. Gas concentrations were continuously recorded by the RMS88 at regular intervals of 1 min for strawberries and 5 min for apples and, in real-time, transferred to a terminal program to calculate respiration rates ( RO2 and RCO2 ) and RQ. Respiration measurement was done in cycles of flushing and measurement period. A respiration measurement cycle with a measurement period of 2 h up to 3 h was shown to be useful for strawberries under air at 10 °C. The start of anaerobic respiration of strawberries due to low O2 concentration (1%) could be recorded in real-time. RO2 and RCO2 of Pinova apples were recorded every 5 min during storage and mean values of 1.6 and 2.7 mL kg−1 h−1, respectively, were obtained when controlled atmosphere (CA) conditions (2% O2, 1.3% CO2 and 2 °C) were established. The modular respirometer was found to be useful for in situ real-time monitoring of respiration rate during storage of fresh produce and offers great potential to be incorporated into RQ-based dynamic CA storage system.en
dc.identifier.eissn1424-8220
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/12016
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-10896
dc.language.isoenen
dc.relation.ispartof10.14279/depositonce-15253en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subject.ddc620 Ingenieurwissenschaften und zugeordnete Tätigkeitende
dc.subject.otherDynamic Controlled Atmosphere storageen
dc.subject.otherRespiratory Quotienten
dc.subject.otherDCA-RQen
dc.subject.otherapplesen
dc.subject.otherstrawberriesen
dc.subject.otherO2 and CO2 sensorsen
dc.titleIn-Situ Measurement of Fresh Produce Respiration Using a Modular Sensor-Based Systemen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber3589en
dcterms.bibliographicCitation.doi10.3390/s20123589en
dcterms.bibliographicCitation.issue12en
dcterms.bibliographicCitation.journaltitleSensorsen
dcterms.bibliographicCitation.originalpublishernameMDPIen
dcterms.bibliographicCitation.originalpublisherplaceBaselen
dcterms.bibliographicCitation.volume20en
tub.accessrights.dnbfreeen
tub.affiliationFak. 5 Verkehrs- und Maschinensysteme::Inst. Maschinenkonstruktion und Systemtechnik::FG Agromechatronikde
tub.affiliation.facultyFak. 5 Verkehrs- und Maschinensystemede
tub.affiliation.groupFG Agromechatronikde
tub.affiliation.instituteInst. Maschinenkonstruktion und Systemtechnikde
tub.publisher.universityorinstitutionTechnische Universität Berlinen

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