Parts Of Asparagus Research Articles

Comparison of Biological Activities of Different Parts of Asparagus

Abstract Objectives Asparagus is a spring vegetable, a flowering perennial plant species belonging to the lily family. Technavio's analysts forecast the Global Asparagus Market to grow at a CAGR of 3.15% during the period 2018–2022. All parts of asparagus, including roots, are rich in bioactive chemicals. However, other parts except asparagus spears are discarded. This study compared the physiological activity of different parts of asparagus and tried to improve the utilization of other parts. Methods Asparagus was divided into root, spear (5 cm from the bottom, 25 cm from the top, respectively), leaf and stem in order and used after lyophilized. Total phenol content, antioxidant activity (DPPH radical elimination ability, ABTS radical elimination ability), α-amylase inhibitory activity, and the effects of nitric oxide (NO) production were measured. Results The total polyphenol content of asparagus was highest in the leaves (22.87 mg TAE/g) and lowest in 5 cm under part of the spear(3.03 mg TAE/g). DPPH radical scavenging effect (44.52% in 1 mg/mL, 92.84% in 5 mg/mL), and ABTS radical scavenging effect(15.58% in 1 mg/mL, 48.02% in 5 mg/1 mL) were the highest on the leaf. On 5 cm under part of the spear, α-amylase inhibitory activity (79.16%) was the higher than any other parts. NO generation was significantly hindered by LPS treatment group 5 cm under part of the spear (12.93 μM), 25 cm above the part of the spear (12.10 μM), root (11.68 μM), leaf(10.43 μM), and stem(9.70 μM) in order(P < 0.001). All the extracts were treated with the cells at concentrations of 100, 500 and 1000 µg/mL for one day. As a result, the survival rate of the macrophages was not significantly different from that of the control group. So it was confirmed that there is no cytotoxicity. Conclusions Thus, these results suggest that the another parts of asparagus may be highly valuable as a high-quality functional component as well as its-antioxidant, antiinflammatory activities. we believe that the results obtained would be helpful in the development of nutraceutics. Funding Sources This study was supported by 2019 Regional Specialized Technology Development Project, Rural Development Administration, Republic of Korea.

Distribution of Rutin and Protodioscin in Different Tissue Parts of Asparagus (Asparagus officinalis L.)

Asparagus is a popular vegetable rich in healthy functional components. Asparagus spears are known to contain a large amount of rutin, which has been found to possess anti-inflammatory, antitumor, and antibacterial/viral properties, and protodioscin, which is an antitumor substance and present in the bottom parts (8 cm from the cut end). However, the process of its production leaves fern in the aboveground parts and roots in the underground parts as significant amounts of nonusable parts, and this issue should be solved. This study was conducted to examine the distributions of rutin and protodioscin, representative functional components in different parts of asparagus. The results suggested that large amounts of rutin were noted in the cladophylls and storage roots (brown and epidermis), and the protodioscin content was high in the buds, the soil-covered section of the spear, and the rhizome. A significant amount of rutin was detected in the aboveground parts, which is consistent with the results of previous studies, but it was also found in the storage roots. The largest amount of protodioscin was found in the buds, as well as in young fruits and seeds of the aboveground parts. Injury by continuously cropping asparagus may be associated with high rutin content in the storage roots of asparagus.

Differences in growth-inhibitory activity among different parts of asparagus and the effects of activated carbon on its reduction

Differences in growth-inhibitory activity among different parts of asparagus and the effects of activated carbon on its reduction

Vaccum cooling and long distance transport test by truckwith Asparagus

In order to study the transportation technique for Asparagus, vaccum cooling, packaging and long distance transportation by truck were discussed. Results were obtained as follows : 1. Vaccum cooling rate of Asparagus was slower than that of leaf vegetables such as lettuce and spinach. In addition, if the prewetting was not applied, temperature differences among each part of Asparagus were subject to be large.2. As for the temperature reduction at each part, the reduction at basal end was larger than that at any other parts. when the basal end was cooled down to 3°C, temperature at the center of spear became 6°C or higher, especially 10°C in the case of stretch package (Key H in Table 1).3. The temperature was reduced about 6. 3°C for each 1 % weight loss during vaccum cooling in the general.4. Weight losses of Asparagus during transportation tend to be larger by means of truck than by means of airplane in same packaging form, which depended on the difference of the required time for these transportations. Among vaccum cooled Asparagus, there was a 0.6 % weight loss at least in the case of stretch package (Key H) and a 2.3 % weight loss at most in the case of banded one (Key I).5. Young's modulus of Asparagus was measured after transportation. Young's modulus of non-prewetted Asparagus was smaller than that of non-precooled one in each packaging form. Significant differences in Young's modulus were not found among each packaging form, but in same packaging form, the modulus of prewetted one was higher than that of non-prewetted one.6. Total weight loss of Asparagus during vaccum cooling and transportation was the largest in the case of stretch package with holes (Key I).7. Significant differences in chemical ccmpositions such as ascorbic acid and reducing sugar content were not observed among each treatment.8. According to the result of sensory test, there were not any treatments blow grade 3 which was defined to be the limit of marketability; however, spoil in taste and softening of spear during vaccum cooling were pointed out.