苹果中呼吸速率检测方案(气调保鲜)

金 Access through your institutionPurchase PDFSearchScienceDirectAbout ScienceDirectQ RELX"Terms and conditionsRemote access Shopping cart AdvertiseWe use cookies to help provide andenhance our service and tailor content and ads. By continuing you agree to the use of cookies.Copyright C 2021 Elsevier B.V. or its licensors or contributors. ScienceDirect @ is a registered trademark of Elsevier B.V. SafePod： A respiration chamber to characteriseapple fruit response to storage atmospheres Storage Control Systems Ltd， Bridgehouse， Hop Pocket Lane， Paddock Wood， Kent， TN12 6DQ， UKStorage Control Systems Inc， 100 Applewood Drive， Sparta， M149345，USA Received 21 March 2021， Revised 18 July 2021， Accepted 25 july 2021， Available online 13 August 2021. (() Check for updates Show less A +Add to Mendeley Share 99 Cite https：//doi.org/10.1016j.postharvbio.2021.111674 Get rights and content Highlights SafePod monitors respiration rate and respiratory quotient ofstoredfruit. · 2-3 day respiratory profile at low O2 allows optimisation of storageconditions. 。 Rise in respiratory quotient at low O2 mirrors chlorophyll fluorescencevield. · Respiratory quotient response is lower as respiration decreases later instorage. ‘Braeburn' has greater low O2 respiratory stress and alcohol productionthan ‘Gala. Abstract During long-term storage of apples， detection of low O2 stress is used to optimiselow O2 storage regimes for dynamic controlled atmosphere(DCA) storage.Monitoring respiratory characteristics， specifically the respiratory quotient (RQ)，provides a tool to achieve this. The objectives of this study were to evaluateprotocols to monitor response of apple consignments to low O2 using a respirationchamber， the SafePod， designed for use in commercial stores and researchlaboratories， and to compare the RQ response to changes in chlorophyllfluorescence(CF) yield from the fruit skin as used in DCA-CF. Protocols to identify the lowest oxygen limit (LOL)，the O2 concentration belowwhich RQ rises，were tested using Braeburn'(sensitive to low O2) and Gala’(lesssensitive to low O2). A protocol that allows fruit to acclimatise at each O2concentration takes several weeks and is therefore not practical for commercial use.A rapid profile without fruit acclimatisation can be completed in 2-3 days. Althoughthis underestimates RQ values， and results in an increase in RQ at a higher O2concentration than observed for acclimatised fruit， the rapid RQ protocol provides apractical method to compare response of apple consignments between cultivars，orchards and seasons. By the rapid protocol， the LOL ofBraeburn' consignmentswas near 0.6 kPa and of Gala'consignments was near 0.2 kPa， consistent withdetection of alcoholic taints below the LOL in each case. The RQ response using theSafePod was consistent with increase in CF yield using HarvestWatchTM. Fruit respiration rates change through the storage season， including a substantialdecrease over the first 2 months after harvest. As RQ response is affected byrespiration rate， accurate comparison of consignments depends on profiles beingmeasured at the same stage in the storage season. It is more difficult to determinethe LOL by RQ profiling later in the season when respiration rates are lower. Keywords Dynamic controlled atmosphere；Apple (Malus domestica)Respiratory quotient；Respiration rate； SafePod View full text Recommended articles Effects of modified atmosphere and sugar imm... Food Packaging and Shelf Life， Volume 29， 2021， Articl... View details v Purchase PDFMaturity determination at harvest and spatial as...Postharvest Biology and Technology，Volume 180， 2021...Purchase PDF View details V Postharvest UV-B and UV-Cradiation enhanced... Postharvest Biology and Technology， Volume 181， 2021... Purchase PDF View details v 1 2Next > Citing articles (0) Highlights•SafePod monitors respiration rate and respiratory quotient of stored fruit.SafePod监测贮藏水果的呼吸速率和呼吸商•2–3 day respiratory profile at low O2 allows optimisation of storage conditions.在低氧条件下，2-3天的呼吸曲线可以优化贮藏条件•Rise in respiratory quotient at low O2 mirrors chlorophyll fluorescence yield.低氧条件下呼吸商的上升反映了叶绿素荧光的产量•Respiratory quotient response is lower as respiration decreases later in storage.因为呼吸作用在贮藏后期减少，呼吸商的反应较低•‘Braeburn’ has greater low O2 respiratory stress and alcohol production than ‘Gala’.Braeburn "比 "Gala "有更大的低氧呼吸压力和酒精产量