• 한국작물학회:학술대회논문집
• /
• 한국작물학회 1993년도 추계 학술대회지
• /
• pp.32-33
• /
• 1993

• 한국작물학회지
• /
• 제63권2호
• /
• pp.158-163
• /
• 2018

Perilla (Perilla frutescens var.frutescens) is an annual plant of the Lamiaceae family, mainly grown for obtaining oil by press extraction after roasting the seeds. Oil yield is one of its important traits, but evaluating this yield is time-consuming, requires many seeds, and is hard to adjust to pedigrees in a breeding field. The objective of this study was to develop a method for selecting high-oil-yield lines in a breeding population without oil extraction. Twenty-three perilla cultivars were used for evaluating the oil yield and seed traits such as seed hardness, seed coat thickness, seed coat proportion and crude fat. After evaluation of the seed traits of 23 perilla cultivars, the ranges of oil yields, seed hardness, seed coat thickness, seed coat proportion, 100-seed weight, and crude fat were 24.68-38.75%, 157-1166 gf, $24-399{\mu}m$, 15.4-41.5%, 2.79-6.69 g, and 33.0-47.8%, respectively. In an analysis of correlation coefficients, the oil yield negatively correlated with seed length, seed width, the proportion of seed coat, seed hardness, and 1000-seed weight, but positively correlated with crude fat content. It was observed that as the seed coat proportion increased, the seed coat thickness, hardness, and 1000-seed weight also increased. Multiple linear regression (MLR) was employed to find major variables affecting the oil yield. Among the variables, traits crude fat content and seed coat proportion were assumed to be indirect parameters for estimating the potential oil yield, with respect to a significant positive correlation with the observed oil yield ($R^2=0.791$). Using these two parameters, an equation was derived to predict the oil yield. The results of this study show that various seed traits in 23 perilla cultivars positively or negatively correlated with the oil yield. In particular, crude fat and the seed coat proportion can be used for predicting the oil yield with the newly developed equation, and this approach will improve the efficiency of selecting prominent lines for the oil yield.

• 한국식품영양과학회지
• /
• 제28권6호
• /
• pp.1212-1219
• /
• 1999

The oils were extracted from the mixture of roasted(for 20 min at 190oC) perilla seeds(RPS) and roasted (commercially) peanuts(RPN) by solvent extraction(SE) and mechanical expression(ME). The effects of mixing ratio on physicochemical characteristics and oxidative stability of their oils were investigated. Yields of both SE and ME oils were increased as the RPN ratio in the mixture increased. In all the SE and ME oils, the major fatty acids were oleic, linoleic and linolenic acid, and total saturated fatty acids increased gradually, but total unsaturated fatty acids decreased gradually as the RPN ratio in the mixture was increased. The specific gravity and refractive index of both SE and ME oils decreased as the RPN ratio in the mixture was increased. Acid value, saponification value and iodine value of SE oils decreased as the RPN ratio in the mixture increased, whereas acid value and iodine value of ME oils decreased and saponification value increased. The colors of ME oils were darker brownish than SE oils. The oxidative stability of SE oils was decreased as the RPN ratio in the mixture increased, whereas that of ME oils was increased. Sensory evaluation of all the oils extracted from the mixture with various mixing ratio showed significant differences in flavor, taste, color and overall acceptance(p<0.01). The oil extracted from the mixture of the mixing ratio of 8:2(RPS:RPN) showed slightly higher preference regardless of extraction method.

• 한국식품저장유통학회지
• /
• 제15권4호
• /
• pp.556-561
• /
• 2008

참기름, 들기름에서 벤조피렌의 생성경로 및 감소화 방안을 확립하고자 본 연구를 시도하였다. 산지 및 종류에 따라 다소간의 차이는 있었으나 근본적으로 국내산 및 수입산 참깨, 들깨에는 각각 $0.06{\sim}0.31{\mu}g/kg$ 및 $0.12{\sim}0.47{\mu}g/kg$의 벤조피렌이 함유되어 있었다. 이 참깨, 들깨를 $220^{\circ}C$에서 20분간 볶은 후에는 각각 $1.87{\sim}2.47{\mu}g/kg$ 및 $2.12{\sim}2.43{\mu}g/kg$의 벤조피렌이가 검출되었고, 이를 압착한 후 얻어진 기름 중에서는 각각 $3.68{\mu}g/kg$ 및 $4.64{\mu}g/kg$의 벤조피렌이 검출되었다. 이는 볶음-압착공정을 밀폐형으로 수행할 경우에는 외부의 공기를 강제로 주입하여 생성된 연기를 강제 배출시키는 것이 효과적이었다. 참기름, 들기름에 함유된 벤조피렌을 제거하기 위하여 원심분리에 의한 찌꺼기 성분의 완전분리, 규조토, 활성탄소 및 규조토-활성탄소 혼합분을 이용한 여과 등 다양한 방법을 시도해 보았으나 활성탄소에 의한 여과법에서만 감소화 효과가 나타났다. 동일한 공정을 개방형으로 수행할 경우에는 각각 $0.63{\mu}g/kg$ 및 $0.56{\mu}g/kg$이 검출되는데 볶음 공정에서 발생한 연기가 기름 중에 흡입되는 것으로 확인되었다. 따라서 개방형 공정에 의할 경우 권장규격기준인 $2.0{\mu}g/kg$ 이내의 참기름, 들기름을 생산할 수 있었다.

• 한국식품저장유통학회지
• /
• 제4권3호
• /
• pp.311-315
• /
• 1997

Proximate compositions of black rice and antioxidative effects of its methanol extract on refined perilla oil were investigated. Black rice seeds were composed of water 12.4%, crude protein 7.9%, crude fat 2.2%, crude fiber 1.0%, ash 1.4% and N-free extract 75.1%. The hexane and 80% methanol fractions in yields were higher than 80% ethanol and chloroform. In AOM(active oxygen method) test, antioxidative effects of black rice added to the refined perilla oil was increased with dose-dependent fashion in concentration of the black rice extracts. Among several extracts tested, 80% aqueous methanol extract showed the highest antioxidative activity, followed by hexane, chloroform, in that order. The peroxide value and TBA value for their antioxidation stability were also lower than that of control. This result was similar to that of AOM test.

• Journal of Biosystems Engineering
• /
• 제21권2호
• /
• pp.123-133
• /
• 1996

An automatic drum seeder was developed to improve the seeding operation. It consisted of a conveyor to transfer seedling trays, a seed-hopper to supply seeds, a drum to drop seeds on the tray, and an air blower to remove extra seeds. A photo sensor was used to detect the transfer of seedling trays, and its signal was fed into microcomputer which operated a stepping motor driving the drum. The seeds were adhered to the surface of drum by vacuum pressure, and were dropped into tray cells by compressed air. An air connection unit was devised to alternate between vacuum pressure and compressed air. A control program for the system, written in C language, could operate the drum at the given number of revolutions and revolutions per minute. The results showed that the air connection unit could operate well and the seeds were dropped satisfactorily into tray cells. In case of cabbage and perilla seeds, which are regular and spherical shape, the missing rate was low and the single seeding rate was more than 97%. Low missing rate and high multiple seeding rate were observed in lettuce seeds which have narrow ends with tight weight. The missing rate of pepper seed was very high because of heavy weight and irregular shape. To improve the performance of the seeder, adjustment of vacuum pressure based upon shape and weight of the seeds, careful selection of the material of drum, maintenance of consistent air blower pressure, and replacement of stepping motor to DC motor are recommended.

• 한국자원식물학회지
• /
• 제28권1호
• /
• pp.135-144
• /
• 2015

The Korean daily intake of vegetable oils has increased about 2.5-fold from 17 g/day to 46 g/day for the last several decades. Perilla (Perilla frutescens var. frutescens) has been cultivated in Korea for a long time as a dietary oil seed which has the highest content of ${\alpha}$-linolenic acid, accounting for nearly 60%. It is known that the main role of ALA is as a precursor to the longer-chain ${\omega}-3$, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), the metabolic products of ${\alpha}$-linolenic acid (ALA, ${\omega}-3$). Dietary ${\omega}-3$ fatty acids reduce inflammation and the risk of chronic diseases such as heart disease, cancer, and arthritis, but they also may act as functional components for cognitive and behavioral function. Thus, ${\alpha}$-linolenic acid is one of the essential nutrients in modern dietary patterns in which much linoleic acid is consumed. Nevertheless, perilla oil, rich in ${\alpha}$-linolenic acid, can be easily oxidized, giving rise to controversies with respect to shelf life, the deterioration of the product's commercial value, and further related toxicity. Recent research using genetic modifications has tried to develop new plant oil seeds that balance the ratio of ${\omega}-6/{\omega}-3$ fatty acids. Such trials could be a strategy for improving an easily oxidizable property of perilla oil due to high ${\alpha}$-linolenic acid. Alternatively, appropriate application of antioxidant to the oil can be considerable.

• 한국육종학회지
• /
• 제41권4호
• /
• pp.391-396
• /
• 2009

Perilla frutescens, which belonging to the Labiatae family, is widely cultivated oil crop and have been used traditional herbal medicine in East Asia such as Korea, China, and Japan. Especially, the leaves and the seeds of this species are important in Korean traditional cooking, as one of the popular garnish and food colorants. Numerous studies have revealed that the beneficial health effects of perilla are due to its several phytochemicals contents, such as rosmarinic acid, caffeic acid, luteolin, and apigenin. For this reason, increasing the content of phytochemicals in perilla hasbecome a major breeding objective. The genetic diversity of the rosmarinic acid, caffeic acid, luteolin, and apigenin content in perilla seed is poorly documented. We analyzed the rosmarinic acid, caffeic acid, luteolin, and apigenin content of 203 accessions of perilla germplasm by high performance liquid chromatography (HPLC). The rosmarinic acid and luteolin contents ofgermplasms were ranged from $15.7{\mu}g/g$ to $2717.1{\mu}g/g$ and from $1.6{\mu}g/g$ to $582.4{\mu}g/g$ respectively.

• 한국식품영양학회지
• /
• 제9권4호
• /
• pp.504-508
• /
• 1996

들깨를 15$0^{\circ}C$에서부터 21$0^{\circ}C$까지 10~30분간 볶아서 착유한 들기름에 존재하는 갈색물질의 갈색도와 전자제공력과, 또한 기호성 및 산화 안정성을 검토하였다. 들기름으로 추출한 갈색물질은 들깨의 볶는 온도와 시간이 증가에 따라 증가하였다. 들깨를 210~에서 30분간 볶아 착유한 들기름으로부터 추출한 갈색물질은 15$0^{\circ}C$에서 10분간 볶은 것에 비해 13배 정도 증가하였다. 한편 볶음조건에 따라 착유한 들기름 중의 갈색물질 추출물의 DPPH에 대한 전자제공력은 볶음온도와 시간 증가에 따라 향상되었다. 21$0^{\circ}C$에서 30분 볶아 착유한 들기름중의 갈색물질은 15$0^{\circ}C$에서 10분 볶은 것에 비해 전자제공력이 약 3배 증가하였다. 기호성이 가장 우수한 들기름에 산화 안정성이 가장 좋은 들기름을 5~20% 혼합한 15% 혼합량 것 중 기호도와 산화 안정성이 가장 우수하였다. 21$0^{\circ}C$에서 30분 볶아 착유한 들기름 중의 갈색물질은 19$0^{\circ}C$에서 20분 볶아 착유한 들기름의 산화 안정성을 증가시켰다.

• 한국식품위생안전성학회:학술대회논문집
• /
• 한국식품위생안전성학회 2001년도 The Asia-Pacific Conference on Reproductive Biology and Environmental Sciences
• /
• pp.123-126
• /
• 2001