烏龍茶葉吸濕性及其品質維持之應用研究

陳加忠; 賴建洲; 曹之祖; C.C. Chen; C.C. Lai; C.T. Tsao

doi:10.29951/JARC.199009.0010

烏龍茶葉吸濕性及其品質維持之應用研究

Other Title

A Study of the Adsorption Isothern of Oolong tea and in Application in Maintaining Tea Quality

Journal

中華農業研究

Journal Volume

39

Journal Issue

3

Pages

239-257

Date Issued

1990-09-10

Date

1990-09-10

Author(s)

陳加忠

賴建洲

曹之祖

C.C. Chen

C.C. Lai

C.T. Tsao

DOI

10.29951/JARC.199009.0010

URI

https://scholars.tari.gov.tw/handle/123456789/13733

Abstract

在此研究中量測兩種烏龍茶葉的平衡相對濕度物性，實驗結果顯示電子式相對濕度計可適用於此種物性量測。溫度對等溫水份線的主要效應發生於70 RH％下範圍。修正Oswin模式適用於此項物性，此研究所得茶葉安定含水率範圍為3─4％。自GAB模式計算所得之安定含水率數值顯著地高於來自BET模式之數值。利用量測的平衡相對濕度和溫度數值計算所得之含水率其誤差約為0.5％。 The equilibrium relative humidity properties of the adsorption isotherms for two types of Oolong tea were measured in this study. The results indicated that electronic RH sensor can serve as good device on ERH measurement. The main effect of temp erature shirt on isotherm were found below the range of 50%RH. The Modified-Oswin equation was the adequate model for two types of Oolong tea. The critical M. C. value for maintaining quality of Oolong tea was 3%-4%. The Mo values calculated by GAB model was signficantly higher than those of BET model. The moisture content of Oolong tea could be calculated by the measured values of ERH and temperature. The average deviation of this technique is nearly 0.5%.

Subjects

烏龍茶葉

吸濕性

單層水份

ERH模式

Oolong tea

Adsorption isotherm

Monolayer value

ERH model

Publisher

農業試驗所

Type

journal article

File(s)

Name

journal_arc_39-3-10.pdf

Size

1.62 MB

Format

Adobe PDF

Checksum

(MD5):2473f70e83596d1d7f1461a2cd70966f