• Food Science of Animal Resources
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• v.31 no.1
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• pp.74-80
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• 2011

The objective of this study was to determine the shelf-life effects and residual nitrite content of emulsified sausages added with pine needles during cold storage. The sausage consisted of four types: no pine needles added (control), pine needle juice added (T1), ethanol extract of pine needles added (T2), and boiling extract of pine needles added (T3). Each sausage type was tested in triplicate and assigned to one of four storage periods: 0, 10, 20, or 30 d. As storage time increased, the presence of pine needles resulted in decreased pH, meat color (CIE $L^*$, $a^*$ and $b^*$), residual nitrite value, and increased thiobarbituric acid reactive substances (TBARS) values and total plate counts (TPC). Values for pH, TBARS, residual nitrite, total plate counts and CIE $L^*$ and $a^*$ decreased significantly with added pine needles relative to the control (p<0.05). In particular, T2 was significantly (p<0.05) more effective for delaying lipid oxidation than the other treatment groups. In conclusion, the results demonstrate that adding an ethanol extract of pine needles (T2) to emulsified sausages tended to improve antioxidative and antimicrobial effects and reduce residual nitrite content during storage compared to the other treatment groups.

• The Korean Journal of Ecology
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• v.12 no.1
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• pp.21-35
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• 1989

It was found that seed germination and seedling growth of selected species were inhibited by phytotoxic substance released from black pine. The longer was the aqueous extraction time of black pine needles, the smaller was the relative germination and growth of the species were inhibited in aqueous leachate and rain leachate as well as in soil underneath the black pine trees. In addition, the growth of lettuce was suppressed in volatile substances from black pine needles. To detect phytotoxic substances of black pine needles, paper chromatography and high performance liquid chromatography were used and fourteen kinds of KDICical compounds were isolated and identified as phenolic acids including benzoic acids. The growth of lettuce was inhibited in the experiment using reagents identical to these KDICical substances and a great inhibition was observed in the concentration of less than 5$\times$ M.

• Journal of Korean Society of Forest Science
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• v.97 no.5
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• pp.516-524
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• 2008

We investigated on the distribution of nutrient contents (N. P and K) in current and one-year old needles of Korean pine, Pinus koraiensis, to understand the physiological effects of alternate bearing. One experimental set was designed with three types of cone number (one, three and five) under natural state and cone number of another one was controlled by thinning. Test samples were separated to collect into three fractions; current needles on the shoot and one-year old needles above and under the cone. On the branch without cone, N, P and K concentrations in needles on the shoot were higher than those in needles of one-year old branch. At natural state, needle P concentration was the lowest in needles on the five-cone branch in August. Macronutrient concentrations were the lowest in needles above the cone, which was remarkably observed in needle K concentration. Under cone thinning, N. P and K concentrations were the highest in needles on one-cone branch and the lowest in needles on five-cone branch. Needle nutrient concentrations were the lowest in needles above the cone, which was remarkably observed in the needle on five-cone branch. In conclusion, the current needles of the shoot and cones are a strong sink of nutrient like N. P and K, and the increase of cone number influences nutrient removal from needles.

• Journal of Sasang Constitutional Medicine
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• v.15 no.1
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• pp.1-11
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• 2003

In Sasang Constitutional Medicine, pine trees have been used as medicines for Taeyangin and a pine-nuts tree for Taeumin. However, there has been some misunderstandings in interpretation as the Koreans referred to back(栢) as pine-nuts tree as well as cheukback(측백) tree. Also, we have disputed over how to translate songback(松栢). Regarding this dispute, 1 came to the following conclusion based on a research with exactitude. 1. Songja (松子), Songjain(松子仁), Songsil(松實) means Pinus Koraiensis(잣), not a pine .one. 2. Backja(栢子) is a fruit of Cheukback(측백) tree, not of a pinus koraiensis(잣). 3. Some part of 'yulsunjun(列仙傳)' quoted to explain pine-nuts in Bonchogangmok(本草綱目) was misrepresented. 4. In regard to the record that a court lady of Chin(秦) Dynasty lived for bundle of years, Galhong(葛洪) made a mistake by saying that she took pine needles and a Pinus Koraiensis in 'Pobakja(抱朴子)', while saying that she took pine needles and leaves of Cheukback(측백) tree in 'Joohoobigeupbang(　後備急方). Also He made a mistake by saying that took pine needles and leaves of cheukback(측백) tree in Bonchogangmok(本草綱目). 5. Songback(松栢), which was referred to in the Analects of Confucius(論語) and the historical annals(史記), should be understood as an old pine tree with a hard quality of the lumber and evergreen, .rather than 'a pine tree and a pine-nuts tree' or 'a pine tree and Cheukback(측백) tree'. 6. Although 'Songback(松栢) mentioned in a book on medicine were sometimes considered as 'a pine-nuts tree' and 'Cheukback(측백) tree' or 'a pine tree and .Cheukback(측백) tree,' it should be regarded as an old pine tree in most cases.

• Korean Journal of Ecology and Environment
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• v.35 no.2 s.98
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• pp.123-132
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• 2002

Experiments have been carried out in barge enclosure near Bukhangang area and arificially eutrophicated pond. Applied plants are three terrestrial plants (Big cone pine, Pine needles and Ginkgo) and one aquatic plant (Water chestnut). In the experiment pond, applied plants are big cone pine, pine needles and ginkgo at the concentration of 0.5 g/l and water chestnut of 0.3 g/l. And it used pine needles at the concentration of 0.3 g/l in barge enclosure. The dominant species was Microcystis aeruginosa. Chlorophyll a concentration decreased to the extent of average 65% as compared with the beginning of experiment by the input of big cone pine and pine needles in artificially eutrophicated pond. But it was decreased to the extent of average 34% by the input of water chestnut. Especially, pine needles significantly inhibited the growth of algae from the early days in barge enclosure, it was declined at a rate of average 74%. It was proved that pine needles was the most inhibitory to the growth of algae at the treatment with $0.3{\sim}0.5\;g/l$, Ginkgo and water chestnut are needed more study. We purified that the dissolved phenolic compounds from the various plants can affect algal growth.

• Journal of Korean Society of Forest Science
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• v.85 no.2
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• pp.244-250
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• 1996

The objectives of this paper were to study the existence of resistant substance to pine gall midge from needles of Pinus densiflora, P. thunbergii, P. virginiana, and P. thunbergii${\times}$P. virginiana, and also to investigat whether terpenoids, fragrant substance contained in those species seduce or evade imago of pine gall midge to oviposit. Also, terpenoids and phenolic compounds were bioassayed on larva. The results are follows. Adults of pine gall midge oviposited indiscriminately all investigated pine species, while gall formation rate by pine gall midge showed 0% in Pinus virginiana, 9% in P. thunbergii${\times}$P. virginiana, 22% in P. thunbergii. It is suggested that young larvae is necrotized by resistant substance in the needles of P. virginiana. This results might mean that fragrant substance, terpenoids, extracted from pine species is not seducible or evadable substance. Larvae of pine gall midge placed on terpenoid and resin were not necrotized. The necrosis rate of larvae of pine gall midge cultivated in the solution of phenolic compounds extracted from needles of P. virginiana, salicylic acid and chitinase showed 89, 92, and 86% respectively. And necrosis rate was 56 and 59% in phenolic compounds extracted from P. densiflora and gallic acid respectively. So, it is postulated that phenolic compounds contained in needles of P. virginiana, salicylic acid and chitinase are resistant substance to pine gall midge.

• Journal of Environmental Health Sciences
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• v.40 no.1
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• pp.38-46
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• 2014

Objectives: This study was carried out in order to estimate atmospheric polycyclic aromatic hydrocarbon (PAH) concentrations and sources using pine needles as a passive air sampler (PAS) in urban (Pyeongtaek), semirural (Anseong) and rural (Jincheon) sites. Methods: One-year-old pine needles were collected for analysis of their PAH concentrations ($C_{p,n}g/g$ dry) at the end of December. PAHs concentrations in the ambient air ($C_a$, $ng/m^3$) were calculated with a $Log(C_p/C_a)-LogK_{oa}$ correlational equation. Results: PAHs concentrations in ambient air ($C_a$) were high, in the order of urban ($114.03ng/m^3$), semirural ($105.17ng/m^3$) and rural ($61.91ng/m^3$) sites. However, distributions of PAH isomer concentrations were very similar. PAHs of which molecular weight is smaller than 228.30 (AcPy, Acp, Flu, Phen, Ant, Flt, Pyr, BaA, Chry) made up most of the PAHs in the ambient air (96.6-98.5%). Conclusion: At urban, semirural and rural sites, it was concluded that the main source of PAHs in the ambient air ratio of each PAH isomer concentration was cars, especially diesel vehicles.

• Journal of the Korean Applied Science and Technology
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• v.4 no.2
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• pp.25-30
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• 1987

In order to investigate the effect to antioxygenic substances in Pine Needles on the photooxidation of linoleic acid (linoleic acid 100mg/10ml ethanol) added antioxidants and antioxygenic substances in Pine Needles was irradiated by the tungsten lamp attached with red fitter. The Photo oxidation of linoleic acid (LA) was conformed with Lea method and rhodan method. The following results were obtained: 1. Photooxidation of LA was greatly increased the presence of photosensitizer. However the Photo oxidation of LA without photosensitizer was smoothly increased by the irradiation. 2. The Photo oxidation of LA without irradiation occured quite lately whether photosensitizer was present or absent. 3. Photooxidation of LA under the presence of photosensitizer was inhibited by the addition of $dl-{\alpha}-tocopherol$ and the acetone fraction of methanol extract of Pine Needles but inhibited by BHT. Photooxidation of LA increased gradually as the addition of BHT increased but decreased gradually as that of acetone fraction increased.

• Journal of Environmental Health Sciences
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• v.39 no.2
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• pp.159-165
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• 2013

Objective: This study was carried out in order to estimate atmospheric Polychlorinated Biphenyls (PCBs) concentrations using pine needles as a passive air sampler (PAS) in urban, semi-rural and rural regions. Methods: One-year old pine needles were collected to analyze their PCBs concentrations ($C_p$, pg/g dry) at the end of December. PCBs concentrations in ambient air ($C_a$, $pg/m^3$) were calculated with the $logK_{oa}-log(C_p/C_a)$) model. Results: PCBs concentrations in ambient air ($C_a$) were high in the order of urban, semi-rural and rural regions. The lower-chlorinated PCBs showed a higher concentration in ambient air. However, the distribution of PCBs congeners was similar in all three regions. Correlation between $C_a$ and the population density of the three regions was significant ($R^2$=0.9834, p<0.001). Conclusions: It was concluded that although the production and use of PCBs was banned in the1970s, PCBs are currently being produced unintentionally by human activities.

• Journal of the Korea Organic Resources Recycling Association
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• v.19 no.1
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• pp.79-85
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• 2011

A study on characteristics for removal of arsenic ion using phosphorylated pine needles was performed. The surface condition of phosphorylated pine needles was confirmed by FT-IR, SEM(Scanning Electron Microscopy) and EDX(Energy Dispersive X-ray). The removal rate of arsenic ion was the highest as about 98% at pH 7. Most absorption for arsenic ion was also completed within 30min and decreased with time and pH of arsenic solution from 6.5 to 2.4.