title: Gas exchange in fruits related to skin condition and fruit ripening studied with diode laser spectroscopy.
abstract: The concentration of the biologically active molecular oxygen gas is of crucial importance for fruits in the metabolic respiration, maturation, and ripening processes. In our study, oxygen content and oxygen transport in fruits, exemplified by apples and guavas, were studied noninvasively by gas in scattering media absorption spectroscopy. The technique is based on the fact that free gases typically have 10,000 times narrower absorption features than the bulk material. The technique was demonstrated in studies of the influence of the fruit skin in regulating the internal oxygen balance, by observing the signal response of the internal oxygen gas to a transient change in the ambient gas concentration on peeled and unpeeled fruits. In addition, the gas exchange rate at different ripening stages was also studied in intact guavas.
authors.affiliation: South China Normal University, Center for Optical and Electromagnetic Research, University City Campus, Research Building 5, Guangzhou 510006, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Huang
authors.affiliation: South China Normal University, Center for Optical and Electromagnetic Research, University City Campus, Research Building 5, Guangzhou 510006, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Zhang
authors.affiliation: South China Normal University, Center for Optical and Electromagnetic Research, University City Campus, Research Building 5, Guangzhou 510006, China.
authors.forename: Huiying
authors.initials: H
authors.lastname: Lin
authors.affiliation: South China Normal University, Center for Optical and Electromagnetic Research, University City Campus, Research Building 5, Guangzhou 510006, China.
authors.forename: Tianqi
authors.initials: T
authors.lastname: Li
authors.affiliation: Lund University, Lund Laser Center, P.O. Box 118, SE-221 00 Lund, Sweden.
authors.forename: Liang
authors.initials: L
authors.lastname: Mei
authors.affiliation: South China Normal University, Center for Optical and Electromagnetic Research, University City Campus, Research Building 5, Guangzhou 510006, ChinabLund University, Lund Laser Center, P.O. Box 118, SE-221 00 Lund, Sweden.
authors.forename: Katarina
authors.initials: K
authors.lastname: Svanberg
authors.affiliation: South China Normal University, Center for Optical and Electromagnetic Research, University City Campus, Research Building 5, Guangzhou 510006, ChinabLund University, Lund Laser Center, P.O. Box 118, SE-221 00 Lund, Sweden.
authors.forename: Sune
authors.initials: S
authors.lastname: Svanberg
mesh_terms: D005638:Fruit / Q000737:chemistry / Q000378:metabolism* / Q000502:physiology*; D005740:Gases / Q000737:chemistry / Q000378:metabolism*; D054023:Lasers, Semiconductor; D027845:Malus / Q000737:chemistry / Q000378:metabolism / Q000502:physiology; D010100:Oxygen / Q000737:chemistry / Q000378:metabolism; D013057:Spectrum Analysis / Q000379:methods*
chemical_list: D005740:Gases; D010100:Oxygen