当前位置： SCI文献检索 > INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES期刊下所有文献 > Radiation-mediated molecular weight reduction and structural modification in carrageenan potentiates improved photosynthesis and secondary metabolism in peppermint (Mentha piperita L.).

Radiation-mediated molecular weight reduction and structural modification in carrageenan potentiates improved photosynthesis and secondary metabolism in peppermint (Mentha piperita L.).

Abstract：

:In an attempt to gain insights into the possible relationship between the irradiation-mediated molecular weight reduction and structural modification and the growth-promotion activity, characterization of the polysaccharide before and after irradiation was carried out through Fourier Transform Infrared (FT-IR), Ultraviolet-visible (UV-vis) and Nuclear Magnetic Resonance (NMR) spectroscopic studies. Moreover, graded concentrations of irradiated carrageenan (IC) were applied through foliage to assess the performance of peppermint (Mentha piperita L.). Among the various concentrations of IC [0 (control), un-irradiated carrageenan (UC), 40, 80, 120, 160 and 200 mg L-1], the effect of 80 mg L-1 IC established to be most favorable for most of the parameters studied. Rubisco and phenylalanine ammonia lyase activities were maximally enhanced by 65.9% and 35.6% by the application of 80 mg L-1 IC, respectively; as compared to the control and UC. A maximum enrichment in the content (32.8%) and yield (88.3%) of essential oil was noted by the application of 80 mg L-1 IC, respectively. Results of the gas chromatography revealed that the contents of menthol and 1, 8-cineole were increased; however, menthone and menthyl-acetate contents were decreased by the application of IC over the control and UC.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Ahmad B,Jahan A,Sadiq Y,Shabbir A,Jaleel H,Khan MMA

doi

10.1016/j.ijbiomac.2018.12.022

subject

Has Abstract

pub_date

2019-03-01 00:00:00

pages

1069-1079

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(18)32740-5

journal_volume

124

pub_type

杂志文章

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