Effect of postharvest treatments on Amaranthus betacyanin degradation evaluated by visible/near-infrared spectroscopy

Y. Z. Cai; H. Corke

doi:10.1111/j.1365-2621.2001.tb16090.x

Effect of postharvest treatments on Amaranthus betacyanin degradation evaluated by visible/near-infrared spectroscopy

Y. Z. Cai, H. Corke^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

A visible/near-infrared spectrophotometric method was developed for betacyanin and moisture content in Amaranthus samples. A standard error of prediction (SEP) of 0.25 mg/g for betacyanins (r²=0.97) and 2.18% for moisture (r²=0.99) was obtained on the validation sample set. Effect of 5 postharvest treatments on betacyanin degradation was assessed. Freeze-drying and -18°C frozen storage gave over 97% pigment retention, compared to natural air (52.8%), solar drying (63.5%), air oven drying (61.9 to 83.1%), and 14°C storage (78.3%). Air-drying gave the lowest degradation rate and longest half-life among the solar and oven-drying treatments for 8 h. Dried samples showed good pigment stability with 28.6 mo half-life at 25°C.

Original language	English
Pages (from-to)	1112-1118
Number of pages	7
Journal	Journal of Food Science
Volume	66
Issue number	8
DOIs	https://doi.org/10.1111/j.1365-2621.2001.tb16090.x
State	Published - 2001
Externally published	Yes

Keywords

Amaranthus
Betacyanins
Pigment degradation
Postharvest treatments
Visible/near infrared spectroscopy

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10.1111/j.1365-2621.2001.tb16090.x

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title = "Effect of postharvest treatments on Amaranthus betacyanin degradation evaluated by visible/near-infrared spectroscopy",

abstract = "A visible/near-infrared spectrophotometric method was developed for betacyanin and moisture content in Amaranthus samples. A standard error of prediction (SEP) of 0.25 mg/g for betacyanins (r2=0.97) and 2.18% for moisture (r2=0.99) was obtained on the validation sample set. Effect of 5 postharvest treatments on betacyanin degradation was assessed. Freeze-drying and -18°C frozen storage gave over 97% pigment retention, compared to natural air (52.8%), solar drying (63.5%), air oven drying (61.9 to 83.1%), and 14°C storage (78.3%). Air-drying gave the lowest degradation rate and longest half-life among the solar and oven-drying treatments for 8 h. Dried samples showed good pigment stability with 28.6 mo half-life at 25°C.",

keywords = "Amaranthus, Betacyanins, Pigment degradation, Postharvest treatments, Visible/near infrared spectroscopy",

author = "Cai, {Y. Z.} and H. Corke",

year = "2001",

doi = "10.1111/j.1365-2621.2001.tb16090.x",

language = "英语",

volume = "66",

pages = "1112--1118",

journal = "Journal of Food Science",

issn = "0022-1147",

publisher = "Wiley-Blackwell",

number = "8",

}

TY - JOUR

T1 - Effect of postharvest treatments on Amaranthus betacyanin degradation evaluated by visible/near-infrared spectroscopy

AU - Cai, Y. Z.

AU - Corke, H.

PY - 2001

Y1 - 2001

N2 - A visible/near-infrared spectrophotometric method was developed for betacyanin and moisture content in Amaranthus samples. A standard error of prediction (SEP) of 0.25 mg/g for betacyanins (r2=0.97) and 2.18% for moisture (r2=0.99) was obtained on the validation sample set. Effect of 5 postharvest treatments on betacyanin degradation was assessed. Freeze-drying and -18°C frozen storage gave over 97% pigment retention, compared to natural air (52.8%), solar drying (63.5%), air oven drying (61.9 to 83.1%), and 14°C storage (78.3%). Air-drying gave the lowest degradation rate and longest half-life among the solar and oven-drying treatments for 8 h. Dried samples showed good pigment stability with 28.6 mo half-life at 25°C.

AB - A visible/near-infrared spectrophotometric method was developed for betacyanin and moisture content in Amaranthus samples. A standard error of prediction (SEP) of 0.25 mg/g for betacyanins (r2=0.97) and 2.18% for moisture (r2=0.99) was obtained on the validation sample set. Effect of 5 postharvest treatments on betacyanin degradation was assessed. Freeze-drying and -18°C frozen storage gave over 97% pigment retention, compared to natural air (52.8%), solar drying (63.5%), air oven drying (61.9 to 83.1%), and 14°C storage (78.3%). Air-drying gave the lowest degradation rate and longest half-life among the solar and oven-drying treatments for 8 h. Dried samples showed good pigment stability with 28.6 mo half-life at 25°C.

KW - Amaranthus

KW - Betacyanins

KW - Pigment degradation

KW - Postharvest treatments

KW - Visible/near infrared spectroscopy

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DO - 10.1111/j.1365-2621.2001.tb16090.x

M3 - 文章

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SN - 0022-1147

VL - 66

SP - 1112

EP - 1118

JO - Journal of Food Science

JF - Journal of Food Science

IS - 8

ER -

Effect of postharvest treatments on Amaranthus betacyanin degradation evaluated by visible/near-infrared spectroscopy

Abstract

Keywords

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