Effects of low light intensity and mineral nutrients on fiber content and chromaticity of different segments in green asparagus spear (Asparagus officinalis L.) during cold storage
2002
"Gu, Z. (Chiba Univ., Matsudo (Japan). Faculty of Horticulture) | Iimoto, M. | Tagawa, A. | Yano, A. | Tanihira, E. "
"To study effects of the low light intensity and mineral nutrients on changes of fiber content and chromaticity of different segments during cold storage, green asparagus spears were stored at 6degC for 21 days under a photosynthetic photon flux density (PPFD) of 2.0 micromol m sup(-2) s sup(-1) using red light irradiation diodes or white fluorescent lamps with mineral nutrient gel application to the spear cutends. Fiber content and chromaticity (L*, a* and b*) were measured at the positions of 5, 12 and 19cm from the tips of the spears, which were expressed the values of apical, middle and basal segments. During cold storage, the increments of fiber content and chromaticity (a* and DE*ab) were lowest in apical segment, followed by middle and basal segments. In apical and middle segments, the fiber content and chromaticity increased in order of light irradiation with mineral nutrients, light irradiation without mineral nutrients, and the dark conditions. In basal segment of the spear, however, the fiber content and chromaticity were lower under light irradiation with mineral nutrients than under other conditions. Red and white light had the similar effects on the changes of fiber content and chromaticity in green asparagus spears during cold storage."
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