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hxx879049567新蟲 (小有名氣)
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[求助]
面團(tuán)用質(zhì)構(gòu)儀怎么測? 已有2人參與
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小麥面粉與水和成面團(tuán)后,用TA-XT2i texturometer測定,不太明白,望大神指教!多謝! 文獻(xiàn)中提到: Dough machinability was determined by assessing the texture profile analysis (TPA) and dough stickiness in a TA-XT2i texturometer (Stable Micro Systems, Godalming, UK) as described by Armero and Collar (1997) using the Chen and Hoseney cell. Primary textural properties were measured in absence of dough adhesiveness by using a plastic film on the dough surface to avoid the distortion induced by the negative peak of adhesiveness (Collar & Bollaı′n, 2005). The adhesiveness was measured without the plastic film. Three and ten repetitions for the TPA parameters and stickiness were done, respectively. Compression test was performed with a 25 mm diameter cylindrical aluminium probe (SMSP/25), 60% compression rate followed of 75 s interval. TPA profile recorded the following parameters: hardness (N), adhesiveness (Ns) and cohesiveness. The Chen and Hoseney cell with a cylindrical probe of 25 mm diameter was used for dough stickiness (N) determination 所以(1)測定面團(tuán)的機(jī)械加工性用TA-XT2i texturometer的TPA分析方法嗎?設(shè)定條件為25mm直徑的探頭、60%的壓縮率、75s的時間間隔,還需要其他的條件嗎? (2)面團(tuán)的 stickiness 是用 Chen and Hoseney cell 測定嗎?Chen and Hoseney cell是什么? |
鐵桿木蟲 (正式寫手)
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1.應(yīng)該是TPA分析方法。我沒有用過TA的,用的是FTC的,但應(yīng)該是大同小異。其他條件應(yīng)該是采用質(zhì)構(gòu)儀默認(rèn)的數(shù)值,因?yàn)樽髡邲]有提及,比如測定前中后的壓縮速率是默認(rèn)值。 2.Chen and Hoseney cell應(yīng)該是一種單元結(jié)構(gòu),包括夾具、電機(jī)等,用來分離面團(tuán)和探頭。具體可見這篇文獻(xiàn)。http://www.sciencedirect.com/sci ... i/S0023643885700795。由于沒有研究過面團(tuán)這類,所以可能有不妥之處。 |

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新蟲 (小有名氣)
新蟲 (小有名氣)
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鐵桿木蟲 (正式寫手)

新蟲 (小有名氣)
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