In order to obtain the most useful chemical information and best separ terjemahan - In order to obtain the most useful chemical information and best separ Bahasa Indonesia Bagaimana mengatakan

In order to obtain the most useful

In order to obtain the most useful chemical information and best separation in the fingerprint chromatograms of Ziyang green tea, the mobile phase compositions, gradient elution procedure and detection wavelength were optimised. In order to enhance the resolution as well as to restrain the ionisation of target compounds, glacial acetic acid and TFA were added to the binary mixture of methanol–water.
As a result, mobile phases containing TFA were selected.
To acquire better selectivity and higher efficiency, different concentrations of TFA (0.05%, 0.1% and 0.5%) in the methanol phase were also investigate.
At the end, the mobile phase consisting of methanol and methanol-0.1% TFA solution (5:95, v/v, pH 2.28) was chosen for the determination of Ziyang green tea with large number of peaks on the chromatogram achieving within 60 min.
On the ultraviolet spectra with chromatograms of HPLC-UV of ten target compounds in Ziyang green tea and reference standards, maximum absorbance values around 232 nm and 278 nm were observed.
More detectable peaks could be obtained and the baseline was well improved around 278 nm, and therefore better characterisation of polyphenols could be achieved.
Hence characteristic chromatographic patterns were obtained by using 278 nm as the detection wavelength.
Optimal HPLC condition used in this study was shown in Section 2.2.

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In order to obtain the most useful chemical information and best separation in the fingerprint chromatograms of Ziyang green tea, the mobile phase compositions, gradient elution procedure and detection wavelength were optimised. In order to enhance the resolution as well as to restrain the ionisation of target compounds, glacial acetic acid and TFA were added to the binary mixture of methanol–water. As a result, mobile phases containing TFA were selected. To acquire better selectivity and higher efficiency, different concentrations of TFA (0.05%, 0.1% and 0.5%) in the methanol phase were also investigate. At the end, the mobile phase consisting of methanol and methanol-0.1% TFA solution (5:95, v/v, pH 2.28) was chosen for the determination of Ziyang green tea with large number of peaks on the chromatogram achieving within 60 min. On the ultraviolet spectra with chromatograms of HPLC-UV of ten target compounds in Ziyang green tea and reference standards, maximum absorbance values around 232 nm and 278 nm were observed.More detectable peaks could be obtained and the baseline was well improved around 278 nm, and therefore better characterisation of polyphenols could be achieved. Hence characteristic chromatographic patterns were obtained by using 278 nm as the detection wavelength. Optimal HPLC condition used in this study was shown in Section 2.2.
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Hasil (Bahasa Indonesia) 2:[Salinan]
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Untuk mendapatkan informasi kimia yang paling berguna dan pemisahan terbaik di kromatogram fi ngerprint teh hijau Ziyang, komposisi fase gerak, prosedur elusi gradien dan deteksi panjang gelombang yang dioptimalkan. Dalam rangka meningkatkan resolusi serta untuk menahan ionisasi senyawa sasaran, asam asetat glasial dan TFA ditambahkan ke campuran biner metanol-air.
Akibatnya, fase gerak yang mengandung TFA dipilih.
Untuk mendapatkan selektivitas yang lebih baik dan lebih tinggi efisiensi, konsentrasi yang berbeda dari TFA (0,05%, 0,1% dan 0,5%) pada fase metanol juga menyelidiki.
Pada akhirnya, fase gerak yang terdiri dari metanol dan metanol-0,1% larutan TFA (5:95, v / v, pH 2,28) dipilih untuk penentuan teh hijau Ziyang dengan sejumlah besar puncak pada kromatogram mencapai dalam waktu 60 menit.
Pada spektrum ultraviolet dengan kromatogram HPLC-UV dari sepuluh senyawa target dalam Ziyang teh hijau dan referensi standar, nilai absorbansi maksimum sekitar 232 nm dan 278 nm yang diamati.
Lebih puncak terdeteksi dapat diperoleh dan baseline baik ditingkatkan sekitar 278 nm, dan karakterisasi karena itu lebih baik dari polifenol dapat dicapai.
Oleh karena itu pola kromatografi karakteristik yang diperoleh dengan menggunakan 278 nm sebagai panjang gelombang deteksi.
Kondisi HPLC optimal digunakan dalam penelitian ini ditunjukkan dalam Bagian 2.2.

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