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          <dc:title xml:lang="ja">食品の凍結乾燥過程における重量と電気容量の変化 &lt;技術論文&gt;</dc:title>
          <dc:title xml:lang="en">A Relationship Between Weight and Capacitance Changes during Freeze-drying Process of Food</dc:title>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">土肥, 貞夫</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">Tohi, Sadao</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">土肥</jpcoar:familyName>
            <jpcoar:familyName xml:lang="en">Tohi</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">貞夫</jpcoar:givenName>
            <jpcoar:givenName xml:lang="en">Sadao</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">羽倉, 義雄</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">Hagura, Yoshio</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">羽倉</jpcoar:familyName>
            <jpcoar:familyName xml:lang="en">Hagura</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">義雄</jpcoar:givenName>
            <jpcoar:givenName xml:lang="en">Yoshio</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">鈴木, 寛一</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">Suzuki, Kanichi</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">鈴木</jpcoar:familyName>
            <jpcoar:familyName xml:lang="en">Suzuki</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">寛一</jpcoar:givenName>
            <jpcoar:givenName xml:lang="en">Kanichi</jpcoar:givenName>
          </jpcoar:creator>
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          <jpcoar:subject subjectScheme="NDC">590</jpcoar:subject>
          <datacite:description xml:lang="en">The development of a non-destructive method was attempted for the measurement of food weight change (i.e. moisture content change) in a freeze-dryer. An aqueous solution of 10% dextrin was used as a food sample. Changes in both weight and temperature of the sample were simultaneously measured during a freeze-drying process. The capacitance of sample was also measured using two stainless steel heating shelf boards as a pair of electrode plates.    Sample temperature histories varied with the sample position in the dryer. Sample temperature did not precisely indicate the freeze-drying state of the sample. Determining the endpoint of freeze-drying based solely on the results of sample temperature measurements remained practical problems. The capacitance change showed a good correlation with the weight change. Thus, it is feasible to monitor the weight of a sample during freeze-drying by measuring its capacitance.</datacite:description>
          <datacite:description xml:lang="ja">凍結乾燥機内の食品の乾燥状態(重量変化)の非破壊測定法を検討した. 食品のモデルとして10%デキストリン水溶液を用いた. まず始めに, 食品を凍結乾燥したときの重量変化と温度変化を同時に測定して, 温度測定の有効性を検討した. 次に, 凍結乾燥機内の加熱用のステンレススチール製棚板2枚を電極板として利用して, 凍結乾燥過程における食品の電気容量変化を測定した. その結果, 凍結乾燥中の食品の温度変化は, 温度センサーの設置場所によって異なり, 正確に乾燥状態を表していないことが明らかとなった. また, 電気容量変化と重量変化との間には, 良好な相関関係があった. 凍結乾燥過程における食品の電気容量を測定することにより, 凍結乾燥機内の食品の乾燥状態を把握できる可能性が示唆された.</datacite:description>
          <dc:publisher>日本食品科学工学会</dc:publisher>
          <datacite:date dateType="Issued">2002-11-15</datacite:date>
          <dc:language>jpn</dc:language>
          <dc:type rdf:resource="http://purl.org/coar/resource_type/c_6501">journal article</dc:type>
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          <jpcoar:sourceIdentifier identifierType="ISSN">1341-027X</jpcoar:sourceIdentifier>
          <jpcoar:sourceIdentifier identifierType="NCID">AN10467499</jpcoar:sourceIdentifier>
          <jpcoar:sourceTitle>日本食品科学工学会誌</jpcoar:sourceTitle>
          <jpcoar:sourceTitle>日本食品科学工学会誌</jpcoar:sourceTitle>
          <jpcoar:volume>49</jpcoar:volume>
          <jpcoar:issue>11</jpcoar:issue>
          <jpcoar:pageStart>726</jpcoar:pageStart>
          <jpcoar:pageStart>726</jpcoar:pageStart>
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