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技術(shù)文章您現(xiàn)在的位置:首頁 > 技術(shù)文章 > 預(yù)制菜水分活度儀應(yīng)用的重要性
預(yù)制菜水分活度儀應(yīng)用的重要性
更新時(shí)間:2025-12-05   點(diǎn)擊次數(shù):59次

 

預(yù)制菜水分活度儀:食品安全與品質(zhì)保障的關(guān)鍵工具

一、基本概念

水分活度 (Aw):指樣品中水的蒸汽壓與同溫度下純水蒸汽壓的比值,范圍 0-1,反映食品中自由水的可用性。純水 Aw=1,干燥物質(zhì) Aw=0。
水分活度儀:測量食品中自由水活性的精密儀器,通過檢測樣品平衡相對濕度計(jì)算 Aw 值,精確度可達(dá) ±0.003 Aw,測量時(shí)間約 5 分鐘。

二、在預(yù)制菜行業(yè)的核心價(jià)值

1. 食品安全保障

  • 微生物控制:Aw>0.9 易滋生細(xì)菌;0.85 是即食預(yù)制菜安全閾值;Aw<0.6 幾乎所有微生物停止生長

  • 防腐劑使用指導(dǎo):Aw≤0.85 可減少或無需添加防腐劑

2. 品質(zhì)與保質(zhì)期管理

  • 穩(wěn)定性指標(biāo):監(jiān)控水分遷移,防止結(jié)塊、軟化等品質(zhì)劣變

  • 保質(zhì)期預(yù)測:通過 Aw 值評估產(chǎn)品貨架壽命,優(yōu)化存儲條件

  • 工藝優(yōu)化:指導(dǎo)干燥、腌制等加工環(huán)節(jié),確保產(chǎn)品一致性

水份活度檢測的意義

任何產(chǎn)品中“游離"或可用水會影響產(chǎn)品的質(zhì)量和保質(zhì)期。這在受到高度管制的制藥、食品和化妝品行業(yè)尤其重要。如果產(chǎn)品中水分過多,就會有微生物生長和水遷移的風(fēng)險(xiǎn)。這可能導(dǎo)致結(jié)塊、一致性或味道改變、營養(yǎng)減少或產(chǎn)品價(jià)值受影響,以及儲存和保質(zhì)期縮短。

測量水活性使得生產(chǎn)和保存過程監(jiān)測、控制和優(yōu)化成為可能,以確保對水分敏感的產(chǎn)品的物理、化學(xué)和微生物穩(wěn)定性。

產(chǎn)品介紹:

   深圳冠亞采用技術(shù)研發(fā)的水分活度儀,采用多種分析測試模式,采用7寸高分辨率的液晶大屏幕,全程觸控式操作模式,分析過程中,可實(shí)時(shí)展現(xiàn)樣品溫度、活度值曲線以及活度值、溫度等參數(shù)的數(shù)據(jù)變化,而且整個(gè)測試過程中全自動(dòng)完成,分析完畢后,自動(dòng)語音報(bào)警,儀器屏幕自動(dòng)鎖定最終的數(shù)據(jù),并同時(shí)存儲測試數(shù)據(jù)。無需人員看護(hù)、維護(hù)實(shí)驗(yàn)過程。專用的微型打印機(jī)在實(shí)驗(yàn)結(jié)束后,實(shí)時(shí)打印出檢測的有效數(shù)據(jù),以便長久保存。也可在歷史記錄里面查看歷史測試記錄并打印。

   設(shè)備專業(yè)的設(shè)計(jì),具有性能穩(wěn)定,檢測精度高,測量時(shí)間短,操作簡便的特點(diǎn)。通過觸摸彩屏顯示,可設(shè)定屏幕背光亮度,實(shí)現(xiàn)了友好的人機(jī)交互界面。可開啟多個(gè)通道同時(shí)測量,測量或校正時(shí)間10分鐘左右,可根據(jù)被測物不同進(jìn)行時(shí)間設(shè)定。校正周期長,無需頻繁校正。同時(shí)帶有打印輸出功能、曲線繪制功能以及上位機(jī)數(shù)據(jù)采集系統(tǒng)。能夠更方便的進(jìn)行數(shù)據(jù)的記錄和采集,可供后期數(shù)據(jù)的比較與分析。

廠家:

深圳冠亞水分儀科技有限公司/深圳市冠亞技術(shù)科技有限公司

冠亞牌預(yù)制菜水分活度儀技術(shù)指標(biāo)

1 活度測試范圍:0.000-1aw

2 分辨率:0.001AW

4 測試通道:1-4(可選,常規(guī)單通道),價(jià)格不同請咨詢銷售;

5 溫度分辨率:0.1℃

6 試樣品名稱:可編輯、輸入樣品名稱

7 測試模式:多種

8 屏幕亮度:可調(diào)整屏幕亮度

9 時(shí)間:可調(diào)整

10、安全功能操作員密碼/管理員密碼設(shè)置功能

11、雙重校準(zhǔn)功能:飽和鹽溶液多點(diǎn)校準(zhǔn),根據(jù)室溫校準(zhǔn)設(shè)備溫度

12、數(shù)據(jù)存儲:自動(dòng)存儲

13、歷史記錄:可查看歷史記錄

14、語音播報(bào):自帶

15、打印功能:微型打印機(jī)可隨時(shí)打印數(shù)據(jù)

17、測試界面顯示:樣品名稱、溫度曲線、活度曲線、溫度值、活度值、測試模式

18、恢復(fù)出廠設(shè)置:具備

19、工作環(huán)境溫度050℃ 濕度095%RH

20、供電電壓交流220V

21、外形尺寸280mm×226mm×120mm

預(yù)制菜水分活度儀應(yīng)用的重要性

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深圳市冠亞技術(shù)科技有限公司

深圳市冠亞技術(shù)科技有限公司

地址:深圳市南山區(qū)科苑西工業(yè)園25棟1段三層

版權(quán)所有:深圳市冠亞技術(shù)科技有限公司  備案號:粵ICP備13045729號  總訪問量:807187  站點(diǎn)地圖  技術(shù)支持:化工儀器網(wǎng)  管理登陸

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