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对于整体果实呼吸作用的测定,大多采用碱液吸收呼吸过程中所释放出的CO_2进行滴定来确定其呼吸强度。1942年Clagpool等人用比色法来测定果实呼吸强度,近年有人进行改进。碱液吸收法只能测定呼吸强度,不能同时测定呼吸系数,而且更不能测定果实在高浓度CO_2条件下(如在CA貯藏条件下)的呼吸作用。比色法比碱液吸收法虽然精确得多,但也只能测定呼吸强度。近年来所采用的气相色层等方法,虽然精确,而仪器复杂不能广泛采用。在果品貯藏研究中,往往需要同时测定呼吸强度和呼吸系数,而且更需要测定在特定条件下(卽高浓度CO_2的CA貯藏条件下)的呼吸强度和呼吸系数,对此我们试用CO_2测定仪和测O_2仪来测定果实呼吸强度和呼吸系数。
For the determination of the overall fruit respiration, most of the use of lye to absorb the release of CO2 during the titration to determine the respiration intensity. In 1942, Clagpool et al. Used colorimetry to determine the fruit’s respiration intensity. Some people made improvements in recent years. Lye absorption method can only determine the respiration intensity, respiration coefficient can not be measured at the same time, but also can not determine the fruit in high concentrations of CO_2 conditions (such as in the CA storage conditions) respiration. Colorimetric lye absorption method, though much more accurate, but only the determination of respiratory intensity. In recent years, the gas chromatography and other methods used, although accurate, and the complexity of the instrument can not be widely used. In the study of fruit storage, it is often necessary to determine the respiratory rate and respiratory rate simultaneously, and to determine the respiratory rate and respiratory rate under certain conditions (CA storage conditions with high CO 2 concentration). In this study, O_2 instrument was used to determine fruit respiration rate and respiratory rate.