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Fresh-cut yellow Chinese yam slices with high antioxidative activity as well as preparation method thereof

A technology for yam tablets and yellow yam, which is applied to the field of fresh-cut yellow yam tablets and its preparation, can solve the problems of being difficult to cut, ooze skin, itching and the like, and achieve the effect of high antioxidant properties

Active Publication Date: 2018-09-18
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is time-consuming to peel the yam when eating, and the mucus oozes out, which makes the skin itchy and difficult to cut.

Method used

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  • Fresh-cut yellow Chinese yam slices with high antioxidative activity as well as preparation method thereof
  • Fresh-cut yellow Chinese yam slices with high antioxidative activity as well as preparation method thereof
  • Fresh-cut yellow Chinese yam slices with high antioxidative activity as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1, the preparation of fresh-cut yellow yam sheet

[0040] Pre-cool (4°C) 24 hours without rot and damage, and wash the soil on the surface with tap water. After the yam is cleaned, remove the head and tail of the yam, peel off the skin, and immerse in cold water (4°C). The yam section was taken out and cut into 3mm thick yam slices, soaked in 100mg / kg NaClO aqueous solution for 3min at a solid-liquid ratio (g / mL) of 1:5. Rinse with water, remove and drain. Get 150g and pack in the PE packing bag of length 41cm, wide 29cm, and packing bag gas is regulated to 80% nitrogen, 20% oxygen (volume fraction) sealing. The thickness of the packaging bag is 8.5 silk (100 silk = 1 mm), O 2 The transmittance is 1114cm 3 / m 2 ·24h·0.1MP, CO 2 The transmittance is 3669cm 3 / m 2 ·24h·0.1MP. After the yam slices were stored at 4°C and 24°C for 11 hours, the yam slices stored at 24°C turned yellow and then stored at 4°C, and the yam slices stored at 4°C were fresh-cut w...

Embodiment 2

[0041] Embodiment 2, the antioxidant activity test of fresh-cut yellow yam sheet

[0042] 1) Preparation of white fresh-cut yam slices and yellow fresh-cut yam slices water extract, alcohol extract and ester extract

[0043] 500g of white fresh-cut yam tablets and 500g of yellow fresh-cut yam tablets were respectively dissolved in 500mL of deionized water, 500mL of methanol and 500mL of ethyl acetate, and extracted for 30min. Centrifuge at 4°C and 12000×g for 30 min, and take the supernatant to obtain water extract, alcohol extract and ester extract of white fresh-cut yam slices and yellow fresh-cut yam slices.

[0044] 2) Oxygen radical absorbance capacity (ORAC)

[0045] Medicine equipment: Phosphate buffer solution (PBS): 102.1g / L potassium dihydrogen phosphate (200mL) + 130.6 / L dipotassium hydrogen phosphate (800mL) = 1LPBS; 2.5μM Trolox stock solution: 25mgTrolox + 100mL PBS → packed in small centrifuge tubes 1.5mL; Sodium fluorescein (FL): Use PBS to prepare fluorescei...

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Abstract

The invention discloses a fresh-cut yellow Chinese yam slices with high antioxidative activity as well as a preparation method thereof. The preparation method of the fresh-cut yellow Chinese yam slices comprises the following steps: (1) cleaning the Chinese yam and removing the peel; (2) cutting the Chinese yam treated in the step (1) into slices to obtain the Chinese yam slices, and soaking the Chinese yam slices into a NaClO aqueous solution; and (3) putting the Chinese yam slices treated in the step (2) into a packaging bag, and storing the bag at the temperature of 22 to 28 DEG C until theChinese yam slices turn yellow to obtain the fresh-cut yellow Chinese yam slices. Compared with white Chinese yam slices, the fresh-cut yellow Chinese yam slices provided by the invention have higherantioxidative activity, meet the market requirement and have a wide development prospect.

Description

technical field [0001] The invention relates to a fresh-cut yellow yam tablet with high antioxidant activity and a preparation method thereof, belonging to the field of agricultural product processing. Background technique [0002] Because yam is rich in active ingredients such as a large amount of protein, various vitamins and beneficial trace elements, mucopolysaccharides, flavonoids, allantoin, etc., it has a certain antioxidant capacity, nutrition and nourishment, helps digestion and other nutritional value and good medicinal value , is one of the homologous vegetables of medicine and food. However, it is time-consuming to peel the yam when eating, and there is mucus oozing out, which makes the skin itchy, and it is not easy to cut. Fresh-cut yam is easy to carry and easy to eat. Because of its freshness and convenience, it has become an important part of a healthy diet and is deeply loved by consumers. [0003] During the fresh-cutting process of yam, the tissue will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/8945A61P39/06A61K125/00
CPCA61K36/8945A61K2236/10A61K2236/13A61P39/06
Inventor 王丹赵晓燕马越赵磊
Owner BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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