Isolation | An-Najah Staff

Emodin, A Naturally Occuring Anthraquinone: Its Isolation and Spectrophotometric Determination in Rumex Cyprius Plant

Thu, 2015-05-14 12:05 — Mohammed A. A. Hannoun

Journal Title, Volume, Page:

Spectroscopy Letters, Volume 29, Issue 8 December 1996 , pages 1539 - 1543

Year of Publication:

1996

Link:

http://www.tandfonline.com/doi/abs/10.1080/00387019608007144#.VVSEQZP-n_I

Authors:

Mohammed A. Al-Nuri

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Nidal A. Za'tar

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Maher A. Abu-Eid

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Mohammad A. Hannoun

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Waheed J. Al-Jondi

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Ahmad I. Hussein

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Mohammad S. Ali-Shtayeh

Department of Biology and Biotechnology, Faculty of Science, An-Najah National University, Nablus, Palestine

Preferred Abstract (Original):

A new method for isolation and specrophotometric determination of emodin is presented. Emodin was isolated by thin layer chromatography (tlc) and column chromatography (cc) techniques, as an orange long crystalline substance. Emodin exhibits two absorption maxima, at 420 and 520 nm. Stability of the color and the effect of pH were studied. Beer's law is obeyed in the range 2-30 ppm.The method is applied to the determination of emodin in roots, stems, and leaves of Rumex cyprius plant.

Plumbagin, a Naturally Occurring Naphthoquinone: Its Isolation, Spectrophotometric Determination in Roots, Stems, and Leaves in Plumbago Europaea L.

Thu, 2015-05-14 11:35 — Mohammed A. A. Hannoun

Journal Title, Volume, Page:

Spectroscopy Letters, Volume 27, Issue 4 May 1994 , pages 409 - 416

Year of Publication:

1994

Link:

http://www.tandfonline.com/doi/abs/10.1080/00387019408007247?journalCode=lstl20

Authors:

Mohammed A. Al-Nuri

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Mohammed A. Hannoun

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Current Affiliation:

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

[email protected]

Nidal A. Zatar

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Maher A. Abu-Eid

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Waheed J. Al-Jondi

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Ahmad I. Hussein

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Mohammed S. Ali-Shtayeh

Department of Biology and Biotechnology, Faculty of Science, An-Najah National University, Nablus, Palestine

Preferred Abstract (Original):

A new method for isolation and spectrophotometric determination of plumbagin is presented. Plumbagin was isolated by thin layer chromatography (TLC) and column chromatography (CC) techniques, as an orange tinged yellow long crystalline substances. Plumbagin exhibits two absrop-tion maxima at 410 and 510 nm. Stability of the color, pKa value, and the effect of pH were studied. Beer's law is obeyed over the range 0.9-45 ppm. The method is applied to the determination of plumbagin in roots, stems, and leaves of Plumbago europaea L. plant.

Emodin, A Naturally Occuring Anthraquinone: Its Isolation and Spectrophotometric Determination in Rumex Cyprius Plant

Wed, 2014-04-02 09:51 — Dr. Waheed J. Jondi

Journal Title, Volume, Page:

Spectroscopy Letters: An International Journal for Rapid Communication Volume 29, Issue 8

Year of Publication:

1996

Link:

http://www.tandfonline.com/doi/abs/10.1080/00387019608007144

Authors:

Waheed J. Al-Jondi

Chemistry Department, An-Najah National University, Nablus, Palestine

Current Affiliation:

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

[email protected]

Mohammed A. Al-Nuri

Chemistry Department, An-Najah National University, Nablus, Palestine

Nidal A. Za'tar

Chemistry Department, An-Najah National University, Nablus, Palestine

Maher A. Abu-Eid

Chemistry Department, An-Najah National University, Nablus, Palestine

Mohammad A. Hannoun

Chemistry Department, An-Najah National University, Nablus, Palestine

Mohammad S. Ali-Shtayeh

Biology Department, An-Najah National University, Nablus, Palestine

Preferred Abstract (Original):

A new method for isolation and specrophotometric determination of emodin is presented. Emodin was isolated by thin layer chromatography (tlc) and column chromatography (cc) techniques, as an orange long crystalline substance. Emodin exhibits two absorption maxima, at 420 and 520 nm. Stability of the color and the effect of pH were studied. Beer's law is obeyed in the range 2–30 ppm.The method is applied to the determination of emodin in roots, stems, and leaves of Rumex cyprius plant.

Plumbagin, a Naturally Occurring Naphthoquinone: Its Isolation, Spectrophotometric Determination in Roots, Stems, and Leaves in Plumbago Europaea L.

Tue, 2014-04-01 12:35 — Dr. Waheed J. Jondi

Journal Title, Volume, Page:

Spectroscopy Letters: An International Journal for Rapid Communication Volume 27, Issue 4, pages 409-416

Year of Publication:

1994

Link:

http://www.tandfonline.com/doi/abs/10.1080/00387019408007247#preview

Authors:

Waheed J. Al-Jondi

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Current Affiliation:

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

[email protected]

Mohammed A. Al-Nuri

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Mohammed A. Hannoun

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Nidal A. Zatar

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Maher A. Abu-Eid

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Ahmad I. Hussein

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Mohammed S. Ali-Shtayeh

Department of Biology and Biotechnology, Faculty of Science, An-Najah National University, Nablus. Palestine

Preferred Abstract (Original):

A new method for isolation and spectrophotometric determination of plumbagin is presented. Plumbagin was isolated by thin layer chromatography (TLC) and column chromatography (CC) techniques, as an orange tinged yellow long crystalline substances. Plumbagin exhibits two absrop-tion maxima at 410 and 510 nm. Stability of the color, pK_a value, and the effect of pH were studied. Beer's law is obeyed over the range 0.9-45 ppm. The method is applied to the determination of plumbagin in roots, stems, and leaves of Plumbago europaea L. plant.

Plumbagin a Naturally Occurring Naphthoquinone: Its Isolation, Spectrophotometric ‎Determination in Roots, Stems, and Leaves in Plumbago Europea L

Tue, 2014-04-01 08:45 — Mohammed Abdullah Al-Nuri

Journal Title, Volume, Page:

Spectroscopy Letters, Volume 27, Issue 4, pages 409 - 416

Year of Publication:

1994

Link:

http://blogs.najah.edu/staff/nidalzatar/article/Plumbagin-a-Naturally-Occurring-...

Authors:

Mohammed A. Al-Nuri

Chemistry Department, An-Najah National University, Nablus, Palestine

Current Affiliation:

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

[email protected]

Maher A. Abu-Eid

Chemistry Department, An-Najah National University, Nablus, Palestine

Nidal A. Zatar

Chemistry Department, An-Najah National University, Nablus, Palestine

Waheed J. Al-Jondi

Chemistry Department, An-Najah National University, Nablus, Palestine

Mohammed A. Hannoun

Chemistry Department, An-Najah National University, Nablus, Palestine

Mohammed S. Ali-Shtayeh

Biology Department, An-Najah National University, Nablus, Palestine

Preferred Abstract (Original):

A new method for isolation and spectrophotometric determination of plumbagin is presented. Plumbagin was isolated by thin layer chromatography (TLC) and column chromatography (CC) techniques, as an orange tinged yellow long crystalline substances. Plumbagin exhibits two absrop-tion maxima at 410 and 510 nm. Stability of the color, pKa value, and the effect of pH were studied. Beer's law is obeyed over the range 0.9-45 ppm. The method is applied to the determination of plumbagin in roots, stems, and leaves of Plumbago europaea L. plant.

Emodin, A Naturally Occuring Anthraquinone: Its Isolation and Spectrophotometric Determination in Rumex Cyprius Plant

Tue, 2014-04-01 08:04 — Mohammed Abdullah Al-Nuri

Journal Title, Volume, Page:

Spectroscopy Letters: An International Journal for Rapid Communication Volume 29, Issue 8

Year of Publication:

1996

Link:

http://www.tandfonline.com/doi/abs/10.1080/00387019608007144

Authors:

Mohammed A. Al-Nuri

Chemistry Department, An-Najah National University, Nablus, Palestine

Current Affiliation:

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

[email protected]

Nidal A. Za'tar

Chemistry Department, An-Najah National University, Nablus, Palestine

Maher A. Abu-Eid

Chemistry Department, An-Najah National University, Nablus, Palestine

Mohammad A. Hannoun

Chemistry Department, An-Najah National University, Nablus, Palestine

Waheed J. Al-Jondi

Chemistry Department, An-Najah National University, Nablus, Palestine

Mohammad S. Ali-Shtayeh

Biology Department, An-Najah National University, Nablus, Palestine

Preferred Abstract (Original):

A new method for isolation and specrophotometric determination of emodin is presented. Emodin was isolated by thin layer chromatography (tlc) and column chromatography (cc) techniques, as an orange long crystalline substance. Emodin exhibits two absorption maxima, at 420 and 520 nm. Stability of the color and the effect of pH were studied. Beer's law is obeyed in the range 2–30 ppm.The method is applied to the determination of emodin in roots, stems, and leaves of Rumex cyprius plant.

Emodin, A Naturally Occuring Anthraquinone: Its Isolation and Spectrophotometric Determination in Rumex Cyprius Plant

Mon, 2014-03-31 12:31 — Nidal Zatar

Journal Title, Volume, Page:

Spectroscopy Letters: An International Journal for Rapid Communication Volume 29, Issue 8

Year of Publication:

1996

Link:

http://www.tandfonline.com/doi/abs/10.1080/00387019608007144#.UzlHn_mSwgY

Authors:

Nidal A. Za'tar

Chemistry Department , An-Najah National University , Nablus, Palestine

Current Affiliation:

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

[email protected]

Mohammed A. Al-Nuri

Chemistry Department , An-Najah National University , Nablus, Palestine

Maher A. Abu-Eid

Chemistry Department , An-Najah National University , Nablus, Palestine

Mohammad A. Hannoun

Chemistry Department , An-Najah National University , Nablus, Palestine

Waheed J. Al-Jondi

Chemistry Department , An-Najah National University , Nablus, Palestine

Mohammad S. Ali-Shtayeh

Biology Department , An-Najah National University, Nablus, Palestine

Preferred Abstract (Original):

A new method for isolation and specrophotometric determination of emodin is presented. Emodin was isolated by thin layer chromatography (tlc) and column chromatography (cc) techniques, as an orange long crystalline substance. Emodin exhibits two absorption maxima, at 420 and 520 nm. Stability of the color and the effect of pH were studied. Beer's law is obeyed in the range 2–30 ppm.

The method is applied to the determination of emodin in roots, stems, and leaves of Rumex cyprius plant.

Plumbagin, a Naturally Occurring Naphthoquinone: Its Isolation, Spectrophotometric Determination in Roots, Stems, and Leaves in Plumbago Europaea L.

Mon, 2014-03-31 10:50 — Nidal Zatar

Journal Title, Volume, Page:

Spectroscopy Letters: An International Journal for Rapid Communication Volume 27, Issue 4, pages 409-416

Year of Publication:

1994

Link:

http://www.tandfonline.com/doi/abs/10.1080/00387019408007247#preview

Authors:

Nidal A. Zatar

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus. Palestine

Current Affiliation:

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

[email protected]

Mohammed A. Al-Nuri

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus. Palestine

Maher A. Abu-Eid

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus. Palestine

Waheed J. Al-Jondi

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus. Palestine

Ahmad I. Hussein

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus. Palestine

Mohammed S. Ali-Shtayeh

Department of Biology and Biotechnology, Faculty of Science, An-Najah National University, Nablus. Palestine

Preferred Abstract (Original):

A new method for isolation and spectrophotometric determination of plumbagin is presented. Plumbagin was isolated by thin layer chromatography (TLC) and column chromatography (CC) techniques, as an orange tinged yellow long crystalline substances. Plumbagin exhibits two absrop-tion maxima at 410 and 510 nm. Stability of the color, pK_a value, and the effect of pH were studied. Beer's law is obeyed over the range 0.9-45 ppm. The method is applied to the determination of plumbagin in roots, stems, and leaves of Plumbago europaea L. plant.

Plumbagin a Naturally Occurring Naphthoquinone: Its Isolation, Spectrophotometric ‎Determination in Roots, Stems, and Leaves in Plumbago Europea L

Thu, 2014-03-27 14:01 — Maher An-Natsheh

Journal Title, Volume, Page:

Spectroscopy Letters, Volume 27, Issue 4, pages 409 - 416

Year of Publication:

1994

Link:

http://blogs.najah.edu/staff/nidalzatar/article/Plumbagin-a-Naturally-Occurring-...

Authors:

Maher A. Abu-Eid

Chemistry Department, An-Najah National University, Nablus, Palestine

Current Affiliation:

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

[email protected]

Ahmad I. Hussein

Chemistry Department, An-Najah National University, Nablus, Palestine

Nidal A. Zatar

Chemistry Department, An-Najah National University, Nablus, Palestine

Waheed J. Al-Jondi

Chemistry Department, An-Najah National University, Nablus, Palestine

Mohammed A. Al-Nuri

Chemistry Department, An-Najah National University, Nablus, Palestine

Mohammed A. Hannoun

Chemistry Department, An-Najah National University, Nablus, Palestine

Mohammed S. Ali-Shtayeh

Biology Department, An-Najah National University, Nablus, Palestine

Preferred Abstract (Original):

A new method for isolation and spectrophotometric determination of plumbagin is presented. Plumbagin was isolated by thin layer chromatography (TLC) and column chromatography (CC) techniques, as an orange tinged yellow long crystalline substances. Plumbagin exhibits two absrop-tion maxima at 410 and 510 nm. Stability of the color, pKa value, and the effect of pH were studied. Beer's law is obeyed over the range 0.9-45 ppm. The method is applied to the determination of plumbagin in roots, stems, and leaves of Plumbago europaea L. plant.

Emodin, A Naturally Occuring Anthraquinone: Its Isolation and Spectrophotometric Determination in Rumex Cyprius Plant

Thu, 2014-03-27 10:47 — Maher An-Natsheh

Journal Title, Volume, Page:

Spectroscopy Letters, 29(8), 1539

Year of Publication:

1996

Link:

http://www.tandfonline.com/doi/abs/10.1080/00387019608007144

Authors:

Maher A. Abu-Eid

Chemistry Department , An-Najah National University , Nablus, Palestine

Current Affiliation:

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

[email protected]

Mohammed A. Al-Nuri

Chemistry Department , An-Najah National University , Nablus, Palestine

Nidal A. Za'tar

Chemistry Department , An-Najah National University , Nablus, Palestine

Mohammad A. Hannoun

Chemistry Department , An-Najah National University , Nablus, Palestine

Waheed J. Al-Jondi

Chemistry Department , An-Najah National University , Nablus, Palestine

Ahmad I. Hussein

Mohammad S. Ali-Shtayeh

Biology Department , An-Najah National University, Nablus, Palestine

Preferred Abstract (Original):

A new method for isolation and specrophotometric determination of emodin is presented. Emodin was isolated by thin layer chromatography (tlc) and column chromatography (cc) techniques, as an orange long crystalline substance. Emodin exhibits two absorption maxima, at 420 and 520 nm. Stability of the color and the effect of pH were studied. Beer's law is obeyed in the range 2–30 ppm.

The method is applied to the determination of emodin in roots, stems, and leaves of Rumex cyprius plant.